An Overview of the Fenugreek (Trigonella Foenum– Graecum) Seed Oil in Hair Care Applications

Hair Follicle

The hair follicle is a specialized, tubular structure embedded within the skin that functions as the site of hair formation and attachment.

It is surrounded by inner and outer root sheaths that provide mechanical support, protection, and guidance to the developing hair fiber.

The follicular unit terminates near the sebaceous gland, which secretes sebum essential for lubrication and maintenance of scalp health.

The hair shaft produced within the follicle is a keratinized structure composed of three concentric layers: cuticle, cortex, and medulla.

The cortex constitutes the major portion of the hair shaft and is responsible for tensile strength, elasticity, and pigmentation, while the cuticle forms a protective outer barrier.

The medulla, when present, occupies the central region of the hair shaft and varies according to hair type.

The shape and orientation of the hair follicle play a key role in determining hair texture and curl pattern.

Relevance to Hair Follicle Function

Fenugreek (Trigonella foenum-graecum)–based hair oil supports normal hair follicle activity by supplying bioactive phytoconstituents such as saponins, flavonoids, alkaloids, and proteins. These compounds contribute to improved follicular nourishment and help maintain the structural integrity of the hair follicle. Regular application of fenugreek oil may enhance follicular anchorage, thereby reducing premature hair shedding and supporting the formation of stronger hair fibers.

Figure 1: Structure of the Hair

Hair Types

Hair classification is mainly determined by the pattern and degree of curl formation. The curvature of hair is largely influenced by the shape and orientation of the hair follicle. Hair type is determined by genetics. Andre walker, known for decadesas Oprah winfreys stylist, is credited with devising a system that classifies hair according to one of four curl pattern.

• Type 1:- Straight
• Type 2:- Wavy
• Type 3:- Curly
• Type 4:- Coily

Hair Growth Cycle

Hair growth occurs through a cyclic process consisting of three sequential phases: anagen, catagen, and telogen.

The anagen phase represents the active growth stage during which the hair fiber is continuously produced and may persist for several years on the scalp.

The catagen phase is a brief transitional stage characterized by cessation of active growth and partial regression of the hair follicle.

The telogen phase is a resting period during which the follicle remains inactive and the fully formed club hair is eventually shed.

Initiation of a new anagen phase results in the displacement of the previously formed hair, leading to normal hair shedding.

Relevance to Hair Growth Cycle

Fenugreek hair oil is believed to influence the hair growth cycle by promoting a favorable scalp environment for sustained anagen (growth) phase activity. Its nutritive and antioxidant components help protect follicular cells from oxidative stress, which is known to disrupt normal hair cycling. By improving scalp circulation and follicular metabolism, fenugreek oil may assist in delaying premature transition to the telogen phase, thereby reducing excessive hair fall.

Problems

Disorders affecting the hair and scalp, although rarely life-threatening, represent a major cosmetic and psychosocial concern.

The scalp’s dense follicular population, abundant sebaceous glands, and warm environment can predispose it to microbial colonization.

Common scalp conditions include seborrheic dermatitis, which presents with inflammation, itching, oily skin, and scaling.

Tinea capitis is a fungal infection of the scalp that primarily affects the skin and hair shafts, particularly in children.

Scalp folliculitis involves inflammatory changes of the hair follicle and may result from bacterial or fungal infection.

Pediculosis capitis is a contagious infestation caused by head lice and commonly affects the scalp and adjacent regions such as the neck and ears.

Figure 2: Some Scalp Disorder[ 3]

1. Alopecia, or hair loss.
2. Seborrheic dermatitis inflammation features of scalp skin, such as scaly, itchy, oily skin.
3. Ringworm, also known as tinea capitis, is a fungal infection of the scalp that affects the skin . The fungus responsible is Trichophytum rubrum.
4. Forehead, the back of the neck, or the ears.
5. Scalp folliculitis, or inflammation of the hairfollicle  .
6. The scientific term for head lice is Pediculosis capitis is a contagious infection . Cause by an obligatory parasite called Capitis pediculus humanus continues to exist . grows on human scalps and consumes human blood.
7. Dandruff: The shedding of dead skin cells.

The cause of some disorders is known, but others possibly   idiopathic. The method used to treat these conditions is vital to preserving one’s personal hygiene.[3]

Relevance in Dandruff and Scalp Disorders

Fenugreek exhibits antimicrobial and anti-inflammatory properties that are valuable in managing common scalp disorders. Fenugreek hair oil may help reduce scalp flaking, itching, and irritation associated with conditions such as seborrheic dermatitis. Its antifungal activity supports the control of dandruff-causing microorganisms, while its soothing effect aids in restoring scalp comfort and hygiene.

Primary Hair Loss Disorders

Hair loss disorders may be classified into scarring and non-scarring alopecias based on follicular damage.

Non-scarring alopecias arise due to disturbances in the hair growth cycle, follicular miniaturization, or mechanical stress.

Telogen effluvium is characterized by diffuse hair shedding and may occur following physiological or psychological stressors such as illness, surgery, or childbirth.

Androgenetic alopecia presents as patterned hair loss in men and diffuse thinning with frontal hairline preservation in women.

Traction alopecia results from prolonged mechanical pulling of hair and is potentially reversible if identified early.

Trichotillomania is an impulse control disorder involving repetitive hair pulling, leading to irregular patches of hair loss with broken hairs.

Traction alopecia: hair loss due to chronic mechanical traction from hair styling, which is reversible in early stages but might become irreversible due to follicular deletion owing to sustained traction.

• Tinea capitis: a curable disease caused by fungal infection presenting in children and is characterized by patchy hair loss with signs of scalp inflammation (such as erythema and scaling of the scalp, and hair shaft infection and presence of fungi observed in pulled hair).
• Short anagen syndrome: usually presents in childhood and is characterized by a normal density and hair strength, but minimal hair growth. Loose anagen syndrome: usually presents in childhood and occasionally in adults and is characterized by slightly thinned, unruly, non-growing hair.
• Temporal alopecia triangularis: a disorder that presents in newborn or young children and is characterized by a triangular or lancet-shaped bald spot with normal hair numbers, but very few terminal hairs (most are vellus hairs).

Scarring alopecias

Scarring types of alopecia (also known as cicatritial alopecias) refer to forms of hair loss in which hair follicles are destroyed owing to inflammation, or rarely, malignancy (such as cutaneous lymphoma). Affected skin shows loss of follicular ostia (the openings of the hair follicle though which the hair fiber emerges through the skin), but the early stages might resemble alopecia areata.

• Lichen planopilaris: a chronic inflammatory disease that causes permanent hair follicle destruction typically characterized by patchy hair loss on the scalp with discrete follicular erythema at the margins of bald patches and sometimes associated with cutaneous and/or mucosal lichen planus (that is, non-infectious itchy rash).
• Frontal fibrosing alopecia: type of lichen planopilaris, but with a different pattern of hair loss (in the frontal and frontotemporal hair line and eye brows), typically affecting postmenopausal women.
• Chronic cutaneous lupus erythematosus: a subtype of lupus erythematosus that presents with a symptomatic patch that evolves into scaly, indurated papules and gradually forms ill-defined, irregular or round plaques with variable atrophy, follicular plugging, telangiectasia and depigmentation.
• Central centrifugal cicatricial alopecia: a condition mainly seen in women of African ethnicity characterized by patchy scarring lesions starting at posterior crown or vertex and extending in a centrifugal pattern along the scalp; the etiology involves genetic and environmental factors, such as African-American hair styling techniques.
• Folliculitis decalvans: inflammation of the hair follicle involving neutrophils and lymphocytes possibly as a reaction to Staphylococcus aureus colonization characterized by patchy scarring hair loss with pustular lesions at the margins and mainly affects men.

Relevance in Hair Loss and Alopecia Management

Fenugreek hair oil may play a supportive role in non-scarring alopecia by strengthening hair roots and minimizing breakage. Its antioxidant activity helps protect hair follicles from environmental and physiological stressors implicated in conditions such as telogen effluvium and androgenetic alopecia. In traction-related hair loss, fenugreek oil may improve hair resilience and reduce follicular stress when used alongside appropriate hair care practices.

Genetic hair disorders

Many syndromic and non-syndromic types of hair loss are due to single gene mutations. The mutations can affect follicular development, normal hair cycling and hair fiber fragility; most conditions are present from infancy or childhood. Types of alopecia areata

• Patchy alopecia areata: one, multiple separate or conjoined (reticular) patches of hair loss.
• Alopecia totalis: total or near-total loss of hair on the scalp.
• Alopecia universalis: total to near-total loss of hair on all haired surfaces of the body.
• Alopecia incognita: diffuse total hair loss with positive pull test, yellow dots, short, miniaturized regrowing hairs, but without nail involvement.
• Ophiasis: hair loss in a band-like shape along the circumference of the head, more specifically along the border of the temporal and occipital bones.
• Sisaipho: extensive alopecia except around the periphery of the scalp.
• Marie Antoinette syndrome (also called canities subita): acute episode of diffuse alopecia with very sudden “overnight” greying with preferential loss of pigmented hair205[9]

Hair Oil

Hair oil are hair care products. Hair care products are defined as the formulations which are used for the purpose of cleansing, modifying the hair texture, providing nourishment to the hair and maintaining the healthy appearance of hair.[5] Hair oil are hair care formulation applied to the hair for the treatment of hair disorder such as baldness, greying of hair, hair fall, dry hair and also helps in providing nourishment to hair.[6] Herbal cosmetics are high in demand due to increasing interest of mankind towards them also herbal cosmetics are more effective with negligible side effects and ingredients are easily available.[7] Herbal hair oil is an essential part of herbal cosmetics. Herbal hair oil is more preferred and used in many aliments of hair.[8] They not only promote hair growth but also provide necessary moisture to the scalp rendering in beautiful hair.[8] Herbal oil which contain herbal drugs are known as hair tonic.[9] Herbal hair oil provides a number of essential nutrient which are important to maintain the normal function of sebaceous gland and promote natural growth of hair.[10] These are one of the most well recognized product for the treatment of hair.[11] The use of hair oil is increasing everyday in line with the improvement in standard of living of people To give natural flavours and colours to hair oil the herbal essences and perfumes are added. Benefits. We live in polluted world which is not hair friendly. That is when herbal hair oil comes into practice. Herbal oil is a blend of bhringraj ,jatamansi, amla, hibiscus, rosemary, almond and other herbs. [6]

 Their benefits are as follow:

• It provides natural goodness to hair. Herbal oil contains vitamins and micro nutrients which acts as a food for hair.
• Hair oil helps in preventing hair loss and fames frizzy hair. Hair ends needs special care and herbal oil pampers them throughout their nourishment.
• Regular use of hair oil of hair oils cure problem of premature grey hair.
• Keeps the scalp hydrated.
• Improves hair growth.
• Prevents dandruff.
• Offers shine glow.
• Stress relief.

Table 1: Functions Of Herbal Hair Oil

Hair care is a significant component of personal grooming, with a growing global demand for herbal and chemical-free cosmetic formulations. Synthetic hair care products often contain parabens, sulfates, and silicones that may cause adverse effects such as scalp irritation, dryness, and long-term hair damage. Hence, the shift towards herbal oils as safe and sustainable alternatives has accelerated.

Fenugreek (Trigonella foenum-graecum) is an ancient medicinal plant cultivated widely in India, the Mediterranean, and North Africa. Traditionally, fenugreek seeds have been used for culinary, medicinal, and cosmetic purposes. In hair care, fenugreek oil is especially valued for its ability to strengthen follicles, prevent dandruff, delay premature greying, and improve hair texture.[6]

Hair oils are hair care products used to prevent and treat baldness or hair aggression, and other conditions. They also promote the luxurious growth of hair. Hair oils contain herbal medications and are used as hair tonics. Hair care products come in two varieties. main category: hair tonics and hair grooming products. In essence, these are medicinal plant extracts made of oil. Many different herbs have been used to treat hair. Brahmi  , Shikakai , Reetha , Lemon, Tulsi , Henna, Neem, Methi, and amla are some of these herbs. Marigold , Liquorice Root , Musk Root , Hibiscus , Nutmeg , Jantamasi ,  Chitraka , Mahabhringraj , Thyme , Parsley , And Rosemary.[4]

Natural hair oil is a vital part of natural cosmetics. Many hair products use natural hair oil, which is more widely used. They not only successfully encourage hair growth but also give the scalp the vital moisture it needs to produce gorgeous hair. Herbal oil containing herbal pills is called a hair tonic. Some vital nutrients that may be required to sustain the regular function of the sebaceous glands and promote hair growth are provided by natural hair oil. These are some of the best hair care products that are easily recognized. As human preferences for living arrangements change, so does the use of hair oil, which makes it possible to add herbal flavors, colorings, and essences to hair oil.[6]

Graecum Trigonella foenum Linn. Frequently Fenugreek is a herb with a strong aroma. It primarily includes Saponins, Luteolin, Flavonoids, And Quercetin. Proteins (26%), Fats (6%), Carbohydrates, Galactomannan (44%), Diosgenin, Tigogenin, Gitogenin, And Trigonelline.[7]

Using fresh fenugreek leaf paste on a regular basis promotes hair growth and maintains natural color, prevents dandruff, and keeps hair silky . [8]

The Fenugreek seeds being high source of Protein are very useful in hairfall ,so it helps in treating baldness, thinning of hair and hair fall. It also has Lecithin, a natural emollient which helps in strengthening and moisturisation of hair. It also keeps the dandruff away and keeps the hair free of lices .[9]

PLANT PROFILE ( PHARMACOGNOSTIC ACCOUNT )

Synonym : Fenugreek

Biological source : the drug consist of the dried ripe seeds of Trigonella foenum-graecum Linn., subfamily Papilionaceae , family Leguminousae.

Table 2: Plant Profile

PHYTOCHEMISTRY OF FENUGREEK  SEEDS

Fenugreek seeds are chemically diverse, containing numerous bioactive constituents that contribute to their therapeutic potential:
- Saponins (diosgenin, yamogenin, tigogenin): Promote hair growth and possess antifungal activity.

Figure 3: Fenugreek Plant

• Alkaloids (trigonelline, choline): Enhance scalp blood circulation and strengthen hair roots.
• Flavonoids: Provide antioxidant effects, reducing oxidative stress-induced greying.
• Proteins and mucilage: Act as natural conditioners, imparting smoothness and reducing frizz.
• Vitamins (A, C, K, folic acid) and minerals (iron, calcium, potassium, zinc): Support hair growth and prevent thinning.
• Essential fatty acids: Maintain scalp moisture and prevent dryness.

SEED GERMINATION 

Fenugreek seeds germinate around 10 h after the start of seed imbibition at 25 C in the dark (Reid and Bewley1979). The seeds should be at least 95 % pure and have 80 % germination rate (Prasad 2011). In the presence of sufficient moisture, oxygen and heat the seeds follow an epigeal process, so that the emergent cotyledon is pulled from under the soil surface during germination. Within the imbibition process which is demonstrated to be under the control of galactomannan function (Reid and Bewley 1979), water inactively is absorbed by the seed that result in endosperm swelling. As the cells absorb water they elongate, extending the radicle to form a primary root toward the soil, which eventually will develop into secondary roots. Protrusion of the radicle by more than 5 mm is considered a sign of fenugreek seed germination (Petropoulos 2002). [7]

Figure 4 : Seed Germination of Fenugreek

METHODS OF EXTRACTION

Several extraction techniques are used to obtain fenugreek oil, depending on the scale of production and desired purity:
1. Cold Pressing: Mechanical pressing of seeds at low temperatures; retains heat-sensitive nutrients.
2. Solvent Extraction: Use of organic solvents  (ethanol, hexane) to isolate active compounds; common in large-scale processing.
3. Maceration/Infusion: Soaking crushed seeds in carrier oils (e.g., coconut, almond, olive) and heating mildly to transfer active ingredients.
4. Supercritical Fluid Extraction (SCFE): Advanced method using supercritical CO? for high-purity extracts.

Table 3 : Extraction Methods

1. Extraction and GC-MS Analysis

Fenugreek seed oil was extracted using Soxhlet extraction with n-hexane, yielding 5.55 ± 0.05% oil with yellowish color. GC-MS analysis identified 23 compounds covering 99% of the oil composition.

1. Major compounds included:
2. Linoleic acid (54.13%) – polyunsaturated omega-6 fatty acid with anticancer activity.
3. Palmitic acid (16.21%) – saturated fatty acid with antioxidant and anti-inflammatory properties.
4. Pinene (4.56%), 4-Pentyl-1-(4-propylcyclohexyl)-1-cyclohexene (3.87%), Linoleic acid methyl ester (3.19%).
5. Oil contained esters, alkanes, fatty acids, glycerides, phenols, flavonoids, and alkaloids.

Variation from previous studies attributed to extraction method and solvent differences.

Figure 5: GC-MS Characterization of Fenugreek Seed Oil