Natural Herbal Ointments as Safer Alternatives to Synthetic Ointments for the Management of Skin Disorders: A Comprehensive Review

Skin is the largest organ of the human body and acts as Physical barrier against microbes, toxins, UV radiation. Regulator of temperature and water loss Skin disorders such as eczema, psoriasis, wounds, burns, acne, and infections are very common and arise due to multiple internal and external factors.

1.1 The major causes for skin disorders include:

• Microbial infections caused by bacteria, fungi, or viruses that damage the skin barrier.
• Inflammatory and immune reactions, where the body’s immune system overreacts, as seen in eczema and psoriasis.
• Physical injuries such as cuts, burns, abrasions, and pressure injuries leading to wounds.
• Hormonal imbalance and excess sebum production, which block pores and promote acne formation.
• Environmental factors like pollution, UV radiation, chemicals, and allergens that irritate the skin.
• Poor hygiene, nutritional deficiencies, and stress, which weaken skin defence mechanisms.

These factors disrupt the normal structure and protective action of the skin, resulting in various acute and long-term affecting dermatological disorders.

1.2 External preparations are preferred because of the following advantages:

Localized action: Topical formulations are administered to the targeted dermatological area. This allows the drug to act exactly on the site of disease, such as inflammation, infection, or wound area, resulting in faster relief and improved therapeutic effectiveness

Figure 1: Common Causes of Skin Disorders

Reduced systemic side effects: Since the drug mainly acts on the local site and minimal amount enters the bloodstream, Cutaneous preparations significantly reduce systemic absorption. This lowers the chance of unwanted effects on other organs, making them safer for long-term and repeated use compared to oral or injectable medications.

Skin Disorder

(Eczema / Psoriasis / Wound / Infection)

Application of Ointment on Skin

Formation of Occlusive Layer

Reduced Water Loss     Protection from Irritants

Improved Skin Hydration

Improved penetration of active compounds

Localized Therapeutic Action

Healing and Symptom Relief

Flow Chart 1: Role of Ointments in Skin Therapy

1.3 Rationale for Polyherbal Oleaginous Ointment

1. Clinical Need: Chronic skin disorders require long-term topical therapy; prolonged usage of chemical ointments may cause skin atrophy, irritation, delayed healing, and resistance.
2. Polyherbal Advantage: Multiple herbal actives provide synergistic anti-inflammatory, antimicrobial, antioxidant, and wound-healing effects.
3. Improved Safety: Lower individual herb concentrations reduce irritation while maintaining efficacy.
4. Oleaginous Base Benefit: Enhances occlusion, skin hydration, and penetration of lipophilic constituents.
5. Overall Benefit: Offers better tolerability, long-term safety, patient compliance, and environmental sustainability compared to synthetic ointments.

1.4 Importance of Ointments

Semisolid topical preparations intended for external application.

• Provide: Occlusive effect, Prolonged contact time, better penetration of active ingredients
• Especially suitable for: Dry and chronic skin conditions

Ointments are semisolid topical preparations are widely used in dermatological therapy due to their simple composition and high therapeutic effectiveness.

Ointments provide an occlusive effect by forming a shielding layer over the outerpart of skin. This layer reduces transepidermal water loss, maintains moisture retention, and guards the affected area from external irritants and microbial invasion. For this reason, ointments promote faster regeneration and restoration of skin-integrity.

Topical Dosage Forms

Selection of Ointment

High Viscosity & Semisolid Nature

Longer Retention on Skin

Prolonged Drug Contact Time

Minimal Systemic Absorption

Reduced Side Effects

Flow Chart 2: Advantages of Ointments over other Topical Forms

They offer prolonged contact time in contact with the dermal compared to other transdermal-forms such as creams or gels. This extended residence time allows the key medicants to remain on the area of application over prolonged duration, leading to sustained therapeutic action. Ointment bases enhance the penetration of active ingredients through the stratum corneum by softening the skin and improving drug absorption. This makes ointments particularly effective for delivering lipophilic drugs and herbal constituents.

Dry / Persistent skin condition

Loss of Skin Moisture

Impaired Skin Barrier

Application of Ointment

Occlusive Effect

Retention of Moisture

Softening of Stratum Corneum

Improved Healing & Protection

Flow Chart 3: Suitability of Ointments Ointment Base

Due to these properties, ointments are especially suitable for dry and chronic dermal diseases i.e., “eczema, psoriasis, and cracked skin,” where moisturization, protection, and long-lasting action are essential for effective treatment.

Active Ingredient

Application on Skin Surface

Adherence to Skin

Gradual delivery of medication

Local Action at Disease Site

Reduced Inflammation / Infection for Dry & Recurrent skin disorder

Flow Chart 4: General Flow of Ointment Action

1.5   Types of Ointment Bases

1. 1. 1. Oleaginous bases (e.g., petroleum jelly)
      2. Absorption bases
      3. Water-removable bases
      4. Water-soluble bases

Ointment bases are the vehicles that carry the active drug to the skin. The type of base selected affects drug release, skin penetration, patient comfort, and therapeutic outcome.

1. Oleaginous Bases (Example: Petroleum jelly, Soft paraffin)

Greasy, oily &  are not mix with water. After application, they form a thick protective layer over dermal. This layer prevents loss of dermal moisture, keeping it soft and hydrated.

• Provide maximum occlusion
• Very stable and protect damaged skin
• Difficult to wash off and feel greasy

Best used for: Dry, scaly, and chronic dermal disorders such as “eczema and psoriasis.”

2. Absorption Bases (Example: Anhydrous lanolin, Hydrophilic petrolatum)

Permeate aqueous and still remain as ointments. They allow mixing of aqueous drug solutions with oily bases. Compared to oleaginous bases, they are less greasy and provide better drug penetration.

• “Can absorb water and form w/o emulsion”
• Moderate-occlusive
• Suitable for drugs in solution form

Best used for: Formulations requiring both oil and water components.

3. Aqueous/Water-Removable Bases (Example: Oil-in-water emulsion-bases)

Cream-like, non-greasy, and easily washable with water. They are more acceptable cosmetically and feel lighter. However, they provide less protection against moisture loss.

• Easily removable
• Less greasy and cooling
• Require preservatives

Best used for: Acute, inflamed, or oozing skin conditions.

4. Aqueous/Water-Soluble Bases (Example: Polyethylene glycol ointments)

Completely free from oils and greases. They dissolve in water and are easy to remove. Since they do not form a barrier, they may cause dryness with prolonged use.

• Non-greasy and clean
• No occlusive effect
• No microbial growth support

Best used for: When a non-greasy and easily washable preparation is required.

1.6 Advantages natural Dermal-forms

• Use of natural plant-based ingredients
• Better patient compliance
• Minimum possibility of skin sensitivity and toxicity
• Cost-effective and eco-friendly
• Traditional knowledge supported by modern research

Herbal Ointment (Natural Plant-Based Ingredients)

Biocompatible & Skin Friendly

Minimal possibility of dermal sensitivity & Toxicity

Better Patient Acceptance & Compliance

Eco-friendly & Cost-effective

Suitable for Long-term Use

Scientifically Validated Traditional Therapy

Flow Chart 5: Advantages of Herbal Ointments

2. AIM AND OBJECTIVES

2.1 Aim

The aim of the present study is to develop and scientifically justify a safe, effective, and stable polyherbal oleaginous ointment using natural ingredients for the management of various skin disorders, and to review its therapeutic advantages over conventional synthetic topical formulations.

2.2 Objectives

The specific objectives of the study are:

1. To design a “polyherbal ointment” formulation using medicinal plant–based ingredients with documented anti-inflammatory, antimicrobial, antioxidant, and wound-healing properties.
2. To select a natural oleaginous-ointment that provides occlusion, enhances skin hydration, improves penetration of herbal actives, and supports healing in dry and chronic skin conditions.
3. To justify the use of polyherbal combination therapy by highlighting synergistic therapeutic action and reduced danger of sensitivity compared to single-component or synthetic formulations.
4. Investigate physicochemical-properties, including “organoleptic characteristics, pH, viscosity, spreadability, homogeneity, and extrudability”.
5. Estimate “the stability and safety” of the formulation through stability studies, microbial limit testing, and skin irritation evaluation in accordance with pharmacopeial and regulatory guidelines.
6. To compare the therapeutic and safety advantages of the polyherbal ointment with conventional synthetic ointments reported in the literature.
7. To highlight the potential of natural herbal ointments as safer, eco-friendly, and patient-compliant alternatives for long-term dermatological therapy.

3.  METHODOLOGY OF THE REVIEW

This review was designed as an integrative and innovation-oriented narrative review to critically evaluate natural herbal ointments as safer alternatives to synthetic ointments. The methodology emphasized not only the collection of existing evidence but also the identification of emerging trends, mechanistic innovations, and translational relevance in dermatological therapy.

Step 1: Review Design

An integrative, innovation-oriented narrative review for evaluation of herbal-ointments as safer in replacement chemical formulations for skin disorders.

Step 2: Literature Search Strategy

A comprehensive search was conducted in PubMed, Scopus, Web of Science, ScienceDirect, Google Scholar, and NCBI for studies published between 2010 and 2025 using relevant keywords related to herbal ointments, dermatology, and topical drug delivery.

Step 3: Study Selection and Screening

Peer-reviewed research articles, reviews, clinical studies, and regulatory documents in English were included. Studies unrelated to topical herbal therapy or lacking therapeutic relevance were excluded following title, abstract, and full-text screening.

Step 4: Data Extraction and Thematic Analysis

Selected studies were systematically analysed and categorized into themes such as formulation strategies, phytochemical composition, pathways of action, therapeutic efficacy, safety, population acceptance.

Step 5: Comparative and Innovation Mapping

Comparative evaluation of natural chemical-based preparations was performed focusing on safety, long-term use, microbial resistance, sustainability, and regulatory feasibility. “By tables and flowcharts were used to summarize findings.”

Step 6: Translational and Clinical Relevance

Preclinical and clinical evidence was assessed for formulation stability, dose feasibility, patient acceptability, and long-term usability to ensure clinical applicability.

Step 7: Quality and Reproducibility Assessment

Phytochemical standardization, quality control practices, regulatory requirements were reviewed to evaluate reproducibility and scalability of herbal ointments.

Step 8: Outcome Synthesis

This step-wise methodology enabled a structured, evidence-based synthesis highlighting herbal ointments as “effective, safe, and sustainable alternatives to synthetic dermatological formulations.”

Research Objective

Literature Search

(Databases & Keywords)

Screening of Studies

(Titles & Abstracts)

Eligibility Assessment

(Full-text Review)

Study Selection

(Inclusion & Exclusion)

Data Extraction

(Formulation, Mechanism, Safety)

Comparative & Innovation Analysis

(Natural Vs Chemical Preparations)

Evidence Synthesis

Conclusion

Flowchart 6: of Review Methodology

4. NATURAL POLY-HERBAL OINTMENTS: COMPOSITION AND THERAPEUTIC BASIS

4.1 Composition of Natural-preparations

The composition generally includes three major components: active herbal ingredients, natural ointment bases, and supportive excipients.

Active Herbal Ingredients: These include crude plant extracts, fractions, essential oils, or standardized phytoconstituents obtained from medicinal plants with proven dermatological benefits. Commonly used plants such as Calendula officinalis, Aloe vera, Curcuma longa, Azadirachta indica, Centella asiatica, and Camellia sinensis are rich in bioactive compounds that exhibit anti-inflammatory, antimicrobial, antioxidant, and wound-healing activities.

Natural Ointment Bases:

Natural bases such as beeswax, shea butter, cocoa butter, coconut oil, olive oil, and lanolin serve as carriers for herbal actives. These bases provide occlusion, enhance occlusive, also facilitate penetration of lipophilic phytochemicals into stratum-corneum. Importantly, many natural bases possess intrinsic therapeutic properties, which repair, emollience, and anti-inflammatory effects.

Supportive Excipients:

Supportive components such as natural emulsifiers, antioxidants (e.g., vitamin E), and mild preservatives are may added to improve stability, prevent oxidation, and extend shelf life while maintaining formulation safety and biocompatibility.

4.2 Therapeutic Basis of Herbal-Ointments

The therapeutic efficacy of herbal-ointments is primarily attributed to diverse phytochemicals, including flavonoids, tannins, terpenoids, phenolic compounds, saponins, and alkaloids. These bioactive compounds act through multiple complementary mechanisms, enabling effective for controlling dermal disorders.

4.2.1 Plant Profiles and Therapeutic Justification

The herbal or polyherbal ointment reviewed by rational selection of medicinal plants traditionally and scientifically recognized for their dermatological benefits. Instead of relying on a single active component, the formulation integrates multiple herbal actives, each contributing a specific therapeutic function. This multi-component approach enhances overall efficacy while maintaining safety and suitability to all.

Table 1: Phytochemicals in Herbal Ointments

1. Phenolic–Terpenoid Hybrid Active (Anti-Inflammatory & Antimicrobial)

Chemical class: Phenolic terpenoid

General structural features:

• Aromatic phenolic ring
• Isoprene-derived terpenoid side chain
• Presence of hydroxyl (–OH) groups

Functional relevance:

The phenolic ring provides antioxidant and antimicrobial activity, while the terpenoid moiety enhances lipid miscibility and permeation. This dual structure enables effective inhibition of inflammatory mediators and microbial growth on applied area.

Dermatological role:

• Anti-inflammatory
• Antibacterial and antifungal
• Enhances skin penetration

2. Furanoflavonoid-Like Active (Immunomodulatory & Pigment-Balancing)

Chemical class: Flavonoid derivative with heterocyclic ring

General structural features:

• Three-ring flavonoid backbone
• Oxygen-containing heterocycle
• Conjugated double bonds

Functional relevance:

This planar aromatic structure allows interaction with inflammatory enzymes and immune mediators. The conjugated system contributes to antioxidant activity and regulation of abnormal skin cell proliferation.

Dermatological role:

• Immunomodulatory
• Anti-inflammatory
• Supports pigment normalization

3. Triterpenoid Ester Active (Wound Healing & Barrier Repair)

Chemical class: Pentacyclic triterpenoid ester

General structural features:

• Five fused carbon rings
• Long hydrocarbon backbone
• Ester or hydroxyl functional groups

Functional relevance:

The bulky lipophilic structure enhances adherence and promotes interaction with skin lipids. These compounds stimulate fibroblast activity and collagen synthesis.

Dermatological role:

• Accelerates wound healing
• Enhances skin barrier repair
• Improves tensile strength of tissue

4. Tannin-Based Polyphenolic Active (Astringent & Antimicrobial)

Chemical class: Hydrolysable or condensed tannin

General structural features:

• Multiple phenolic hydroxyl groups
• High molecular-weight
• Strong protein-binding capacity

Functional relevance:

The abundance of hydroxyl groups allows strong binding to microbial proteins and damaged tissue, producing an astringent effect that reduces exudation and microbial colonization.

Dermatological role:

• Antimicrobial
• Astringent
• Controls oozing and infection

5. Glycyrrhetinic-Like Triterpenoid Active (Anti-Inflammatory & Soothing)

Chemical class: Triterpenoid saponin aglycone

General structural features:

• Pentacyclic triterpene nucleus
• Carboxylic acid and hydroxyl groups
• Amphiphilic character

Functional relevance:

This structure mimics corticosteroid-like anti-inflammatory activity without steroid-associated adverse effects. It modulates inflammatory pathways and soothes irritated skin.

Dermatological role:

• Corticosteroid-like anti-inflammatory action
• Reduces redness and itching
• Suitable for chronic use

Note:

By chemically diverse phytoconstituents ensures multi-target therapeutic action against inflammation, infection, oxidative stress, and impaired barrier function. The structural compatibility of these compounds with an oleaginous base enhances stability and penetration while maintaining topical safety. Importantly, no synthetic steroids or antibiotics minimizes long-term adverse effects, supporting the suitability of this polyherbal ointment for chronic dermatological use.

4.3 Functional Role of Auxiliary Ingredients in the Ointment Profile

Along with primary herbal actives, the effectiveness, stability, and patient acceptability of a topical ointment depend largely on carefully selected auxiliary ingredients. These components do not exert direct pharmacological action which enhancing delivery, stability, texture, and overall performance of the formulation.

1. Occlusive Lipid Base Component

Functional category: Natural solid lipid

Role in ointment:

This component forms the structural backbone to the preparion. It provides occlusion by creating a semi-solid film over the skin surface, thereby reducing transepidermal water loss. The occlusive environment promotes hydration of the stratum corneum and improves penetration of herbal actives.

Contribution to formulation:

• Enhances skin moisturization
• Improves consistency and body
• Supports healing in dry and cracked skin

2. Natural Structuring and Stiffening Agent

Functional category: Natural wax

Role in ointment:

This ingredient regulates the firmness and viscosity of the ointment. It prevents excessive greasiness and improves spreadability, ensuring uniform application and dose consistency.

Contribution to formulation:

• Improves texture and stability
• Prevents phase separation
• Enhances user acceptability

3. Emollient Liquid Lipid Component

Functional category: Natural fixed oil (medium viscosity)

Role in ointment:

This component softens along with enhances glide during application. It dissolves lipophilic herbal constituents and facilitates their even distribution throughout the ointment-base.

Contribution to formulation:

• Improves spreadability
• Enhances skin softness
• Acts as solvent for actives

4. Lightweight Penetration-Enhancing Oil

Functional category: Low-viscosity ester or liquid wax

Role in ointment:

This ingredient mimics the natural skin lipids, improving absorption without leaving an oily residue. It supports Extended releasing of actives and enhances patient comfort.

• Contribution to formulation:
• Enhances penetration
• Non-greasy skin feel
• Improves sensory profile

5. Fast-Absorbing Conditioning Oil

Functional category: Polyunsaturated lipid source

Role in ointment:

This oil provides conditioning benefits by light texture. It contributes essential fatty acids that support skin barrier repair and elasticity.

Contribution to formulation:

• Maintains skin elasticity
• Supports barrier restoration
• Reduces heaviness of ointment

6. Natural Antioxidant Stabilizer

Functional category: Lipid-soluble antioxidant

Role in ointment:

This component protects both the preparation and the skin from oxidative damage. It prevents rancidity of oils and extends the shelf-life of topical form.

Contribution to formulation:

• Prevents oxidation
• Enhances stability
• Provides additional skin protection

7. Broad-Spectrum Natural Preservation System

Functional category: Natural antimicrobial preservative

Role in ointment:

This ingredient controls microbial growth, particularly during storage and repeated use. It supports product safety without synthetic-preservatives.

Contribution to formulation:

• Maintains microbiological quality
• Improves shelf stability
• Enhances safety for topical use

8. Natural Fragrance and Sensory Modifier

Functional category: Volatile aromatic component

Role in ointment:

These components improve the sensory appeal by imparting a mild, pleasant aroma. Some volatile constituents also exhibit mild antioxidant or antimicrobial properties.

Contribution to formulation:

• Improves patient compliance
• Masks raw herbal odour
• Enhances overall acceptability

4.4 Role of Natural Ointment Bases

Semisolid carriers derived from plant oils, waxes, and butters (e.g., shea butter, coconut oil, beeswax) that provide the vehicle for active herbal constituents. Their roles include:

1. Enhancing Drug Penetration: Lipophilic bases improve solubility of plant actives and facilitate easy pass through barrier.
2. Maintaining Skin Hydration: Occlusive effect reduces (TEWL), promoting skin softness and flexibility.
3. Improving Stability: Natural bases protect sensitive phytochemicals from oxidation, hydrolysis, and microbial degradation.
4. Patient Compliance: Non-irritant, non-greasy or mildly greasy formulations improve acceptability and long-term use.

Table 2: Common Natural Bases and Their Properties

Natural Base

Protects Phytochemicals

Enhances Penetration + Hydration

Improves Therapeutic Effect

Ensures Safety & Patient Compliance

Flow Chart 7: Role of Natural Bases in Herbal Ointments

5. MECHANISM OF ACTION OF POLYHERBAL OINTMENTS

Research suggests a multifactorial mechanism, unlike synthetic agents.

Herbal ointments act through multifactorial mechanisms with  diverse phytochemicals, including flavonoids, terpenoids, tannins, alkaloids, and phenolic compounds. Unlike synthetic agents, which often target a single pathway (e.g., corticosteroids inhibiting inflammation via COX inhibition), herbal ointments exert multiple complementary effects simultaneously, leading to enhanced therapeutic outcomes and reduced adverse effects.

Key Mechanisms Identified in Research:

1. Anti-inflammatory Activity:
   1. Phytochemicals such as flavonoids and terpenoids inhibit pro-inflammatory cytokines (TNF-α, IL-1β, IL-6) and enzymes (COX-2, LOX), reducing erythema, edema, and pain in inflamed skin.
   2. Certain herbal constituents modulate NF-κB signaling pathways, controlling inflammatory gene expression.
2. Antimicrobial Effect:
   1. Tannins, alkaloids, and essential oils causes inhibit bacterial or fungal enzymes, and prevent biofilm formation.
   2. Provides protection against secondary infections in wounds, burns, and chronic lesions.
3. Antioxidant and Free-Radical Scavenging:
   1. Phenolic compounds and flavonoids neutralize reactive oxygen species (ROS), protecting cells from oxidative stress which causes to delayed healing and skin-aging.
   2. Reduces lipid peroxidation in skin membranes, maintaining structural integrity.
4. Wound-Healing and Tissue-Regeneration:
   1. Herbal actives stimulate fibroblast proliferation, collagen synthesis, and angiogenesis, accelerating epithelialization.
   2. Enhances “tensile strength and elasticity of repaired tissue, promoting functional recovery”.
5. Skin Barrier Protection and Hydration:
   1. Natural bases such as shea butter and beeswax provide occlusion, prevent transepidermal water loss, and maintain skin hydration.
   2. Supports barrier restoration alongside active phytochemical effects.

Herbal Phytochemicals (Flavonoids, Tannins, Terpenoids, Phenolics) 

Anti-inflammatory       Antimicrobial       Antioxidant        Wound Healing

Reduced erythema &     Reduced infection     Scavenging      Collagen & fibroblast

edema                     & biofilm                 ROS & lipid          proliferation

                                   peroxidation

Enhanced skin repair & regeneration

Improved barrier function & reduced side effects

Flow Chart 8: Multifactorial Mechanism of preparation

The synergistic and multi-targeted nature preparation distinguishes them from synthetic counterparts. This multifactorial mechanism not only enhances therapeutic efficacy but also minimises the risks, making herbal-ointments particularly suitable for chronic, inflammatory, or sensitive skin conditions.

6. FORMULATION DEVELOPMENT OF A MODEL POLYHERBAL OINTMENT

6.1 Selection of Herbs

The selection of herbal components for the model ointment was carried out by collective review of classical Ayurvedic literature, ethnopharmacological reports, and contemporary scientific studies. Herbs possessing well-documented dermatological benefits, including anti-inflammatory, antimicrobial, antioxidant, wound-healing, and skin-protective activities, were prioritized. Emphasis was given to botanicals traditionally used for topical applications and those noted as Safe for prolonged dermal exposure. Additionally, the selected herbal components were screened for compatibility with topical bases, stability with general conditions, and suitability for incorporation into semi-solid dosage forms. Only plant-derived materials with established historical use and supportive scientific evidence were considered for formulation development.

6.2 Justification of Ingredients

This designed using a synergistic combination of herbal actives and natural excipients, each serving a specific functional role. The herbal actives were selected to provide multimodal therapeutic action, addressing inflammation, microbial growth, oxidative-stress, and impaired skin-barrier function.

Natural excipients were chosen to act as:

• Ointment base formers, providing appropriate consistency and occlusivity
• Emollients, enhancing skin-hydration and softness
• Stabilizers, ensuring uniform dispersion of herbal actives
• Preservative-supporting agents, improving microbiological stability

The overall composition was optimized to achieve maximum therapeutic efficacy, improved patient acceptability, and minimal risk of skin irritation, while maintaining a completely herbal and biocompatible profile.

6.3 Formula Composition (Model 20 g Batch)

The model prepartions was formulated as a semi-solid preparation using a balanced proportion of herbal actives and natural base materials. The composition was standardized for a 20 g batch, with ingredients categorized into functional groups rather than disclosed individually. The quantities were adjusted to obtain a smooth, homogeneous ointment with optimal spreadability and acceptable rheological properties.

6.4 Preparation Method

It was prepared using a standard fusion technique, commonly employed for semi-solid dosage forms. Initially, the base materials were gently melted in a controlled temperature range using a water bath. The emollient components were added to molten base under continuous stirring to attain good mixing. The herbal active fraction was then gradually added to the base at a temperature suitable to preserve phytochemical integrity. Continuous mixing until a uniform mass was obtained and allowed to cool gradually with constant mixing to prevent phase separation. The final ointment was transferred into suitable, airtight containers, labelled, and stored with desired conditions for further evaluation.

7. EVALUATION PARAMETERS

Preparation was tested with various physicochemical, microbiological, stability, and safety parameters in accordance with Indian Pharmacopoeia (IP) standards and relevant OECD guidelines to ensure quality, safety, and performance of the formulation.

7.1 Organoleptic Properties

The preparation was examined visually and manually for “colour, Odor, appearance, and texture”. A small quantity of the ointment was applied on the skin surface to assess smoothness, greasiness, and consistency.

Acceptance Criteria (IP): Uniform colour, Pleasant or characteristic odour, Smooth, non-gritty texture, Absence of phase separation

7.2 Determination of pH

The pH of the ointment was determined by dispersing “1 g of ointment in 10 mL of distilled water and allowing it to equilibrate for 2 hours.” The pH was measured using a calibrated digital pH meter at room temperature.

Acceptance Range (IP): pH suitable for topical application (approximately 5.5–7.0)

7.3 Viscosity Measurement

Viscosity of natural preparation with Brookfield viscometer with an appropriate spindle at controlled temperature. The readings were taken at different rotational speeds to assess rheological behaviour.

Acceptance Criteria: Semi-solid consistency, Suitable viscosity for easy application and retention on skin

7.4 Spreadability Test

Spreadability was determined using the slip and drag method. “A fixed quantity of ointment was kept between two glass slides, and a known weight was applied”. The time taken for the upper slide to move a specified distance was recorded.

S=M x LT

Where:

S = Spreadability, M = Weight applied, L = Length moved, T = Time taken

Acceptance Criteria: ≥ 5 g·cm/sec. Higher value indicates better ease of application. Good spreadability indicating ease of application.

1. 5. Extrudability Test

Filling the ointment into a squeezable tube and applying uniform pressure. The quantity squeezed out in a specific time was measured.

Acceptance Criteria: Uniform extrusion, no excessive force required

7.6 Homogeneity

Tested for homogeneity by visual inspection and by pressing a little of formulation between the fingers to detect the presence of lumps, grittiness, or phase separation.

Acceptance Criteria: Smooth and uniform consistency, Absence of coarse particles

7.7 Stability Studies

Stability studies were conducted regarding IP and ICH guidelines by storing the ointment at:

• Room temperature
• Elevated temperature
• Refrigerated conditions

The formulation was periodically evaluated for changes in colour, odour, pH, consistency, and phase separation over a specified period.

Acceptance Criteria: No significant physical/chemical changes

7.8 Microbial Load Test

Microbial limit testing was performed using the plate count method to determine total viable aerobic count and fungal count, as per IP standards.

Acceptance Criteria (IP): Total aerobic microbial count within permissible limits, Absence of pathogenic organisms

7.9 Irritation-Test

The skin irritation was assessed following OECD Guideline 404 (Acute Dermal Irritation/ Corrosion). The preparation spreaded to a shaved skin area, and the site was observed for erythema and edema at specific intervals.

Acceptance Criteria (OECD): No signs of redness, swelling, or irritation.

8. COMPARATIVE REVIEW: HERBAL VS SYNTHETIC OINTMENTS

8.1 Limitations of Synthetic Ointments

• Synthetic ointments provide rapid therapeutic action but show significant limitations during long-term or repeated use, especially in chronic skin disorders.
• Prolonged use of topical corticosteroids causes skin atrophy, epidermal thinning, telangiectasia, striae, hypopigmentation, acneiform eruptions, delayed wound healing, rebound dermatitis, and steroid dependence.
• Extended use of topical antibiotics and antifungals acts as microbial resistance and allergic contact dermatitis, reducing treatment efficacy.
• Chemical excipients such as preservatives, fragrances, and stabilizers in chemical preparations which cause irritation, sensitization, and allergic reactions, particularly in sensitive or damaged skin.
• Occlusive synthetic bases may disrupt normal skin physiology, causing folliculitis, comedogenic effects, maceration, and enhanced systemic absorption, especially in paediatric and geriatric populations.
• Synthetic ointments generally act via a single pharmacological pathway, due to inadequate for multifactorial skin disorders involving inflammation, infection, oxidative-stress, along with barrier dysfunction.
• Environmental concerns arise by non-biodegradable nature of many synthetic ingredients.
• These limitations collectively reduce acceptance by patients and highlight their safer, multifunctional, and sustainable topical alternatives.

Table: Limitations of Synthetic Ointments Reported in Literature

• Herbal ointments show therapeutic efficacy comparable to or better than synthetic formulations.
• They act through multi-target mechanisms (anti-inflammatory, antimicrobial, antioxidant, wound healing).
• Synthetic ointments often have single-pathway action and on long-term use causes more risk.
• Herbal ointments promote faster healing with better safety profiles.
• Natural origin and moisturizing properties improve patient-compliance.
• Polyherbal synergy makes them suitable for chronic and multifactorial skin disorders.

TABLE: Herbal Ointments vs Synthetic Ointments

8.2 General Methodology for Comparative Study of Polyherbal and Synthetic Ointments

Step 1: Selection of Formulations The polyherbal ointment is selected as the test formulation, while a commercially available synthetic ointment with a similar therapeutic indication is chosen as the reference standard. Selection is by clinical relevance and widespread use.

Step 2: Standardization of Study Conditions Both formulations are evaluated under identical experimental conditions, including temperature, sample quantity, test duration, and storage conditions. All evaluations are typically conducted in 3 trails to satisfy reproducibility.

Step 3: Physicochemical Evaluation Both ointments are subjected to physicochemical assessment, including organoleptic examination, homogeneity testing, and pH determination using dispersion methods. Viscosity and consistency are measured using suitable viscometers, and stability studies are conducted under accelerated and real-time conditions.

Step 4: Performance Evaluation Performance characteristics such as spreadability and extrudability are compared using standardized techniques like slip-and-drag methods and tube extrusion tests. In vitro diffusion and drug release studies are carried out using Franz diffusion cells to compare release behaviour.

Step 5: Biological Activity Evaluation Comparative biological evaluation is performed by antimicrobial assays (agar well diffusion or cup plate methods) against selected microbial strains. Anti-inflammatory activity is assessed using protein denaturation inhibition or membrane stabilization assays.

Step 6: Compatibility Assessment Safety evaluation includes itching and sensitization studies conducted in accordance with OECD guidelines. Observations for erythema, edema, or allergic reactions are recorded. Microbial limit tests are also performed to ensure microbiological safety.

Step 7: In Vivo Functional Evaluation (If Applicable) In vivo models such as excision or incision wound models are used to evaluate functional outcomes, including wound contraction and epithelialization time.

Step 8: Data Analysis and Interpretation Results are expressed “as mean ± standard deviation and analysed statistically using appropriate tests” such as Student’s t-test or ANOVA to determine significant differences between formulations.

Step 9: Comparative Outcome Assessment The overall comparison is made by   integrating physicochemical, performance, biological, and safety data to determine therapeutic equivalence or advantages of the polyherbal ointment over the synthetic formulation.

8.3 Key Advantages of Herbal Ointments over Synthetic Ones:

• Multifaceted mechanisms of action versus single-target synthetic agents
• Minimum of local irritation and hypersensitivity
• Better compatibility with chronic and sensitive skin
• Eco-friendly and sustainable ingredients

Skin Condition

Herbal Ointments                                    Synthetic Ointments

Phytochemical actions                                     Targeted synthetic modes

(anti-inflammatory,                                         (Steroids, antibiotics)

                                antimicrobial, antioxidant)

Multifactorial healing pathways                    Single-pathway effects

Effective therapeutic outcome                      Effective but side-effect

with minimum side effects                               linked outcomes

Enhanced Patient compliance                       Long-term safety issues

Flow Chart 9: Comparative Action of Herbal vs Synthetic Ointments