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Also called: male pattern hair loss · female pattern hair loss · AGA · FPHL
Androgenetic alopecia (AGA) is the most common cause of hair loss worldwide - a genetically determined, hormone-dependent miniaturisation of hair follicles. In men it follows a predictable Norwood–Hamilton pattern; in women it presents as diffuse central thinning (Ludwig scale).
DHT (dihydrotestosterone), produced from testosterone by 5α-reductase, binds to androgen receptors in genetically susceptible follicles, shortening the anagen (growth) phase and causing progressive follicle miniaturisation. The dermal papilla gradually shrinks, producing thinner, shorter, and lighter vellus hairs until the follicle becomes completely unproductive.
Affects approximately 50% of men by age 50 and 30–40% of women over their lifetime. Onset in South Asian men often begins in the early-to-mid 20s.
Tests are performed by a qualified dermatologist or trichologist after clinical assessment.
5% solution or foam applied twice daily prolongs anagen phase. Results visible by month 4–6.
5α-reductase inhibitors reduce scalp DHT. Prescription-only; requires dermatologist evaluation.
A 7-phase vegan cyclical-nutrition therapy (melatonin, vitamin C, curcumin/CoQ10, botanicals) matched to the hair growth cycle. Supports the follicle from within.
View Trichocycle Matrix →Photobiomodulation stimulates follicle metabolism. Used as adjunct to topical therapy.
Mechanical traction adds to follicle stress in susceptible scalps.
Timeline: First visible response to topical minoxidil typically at 4–6 months. Plateau usually by month 12. Consistent daily use is required to maintain results.
Book a dermatologist consultation if you notice rapid progression (>50% volume loss in 6 months), patchy rather than diffuse loss, scalp inflammation or itching, or if over-the-counter treatments have shown no response after 6 months.
“In my clinic, the most common mistake I see is stopping topical treatment the moment shedding increases in the first 6 weeks - that "shedding phase" is actually the old miniaturised hairs making way for healthier ones. Persistence is the single biggest predictor of outcome.”
Last reviewed March 2025. This page is clinical reference, not a diagnosis. Only an in-person assessment can tell you which condition you have.
A dermatologist can tell you in one visit. The consultation is free.
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