DHT and Hair Loss: The Hormone That Is Destroying Your Follicles

If you have been experiencing progressive hair thinning — receding temples, a widening part, or a thinning crown — and other tests have come back normal, there is a high probability that DHT is the primary driver. Dihydrotestosterone is responsible for the most common form of hair loss in both men and women globally: androgenetic alopecia. Yet most people experiencing DHT-driven hair loss either do not know what DHT is, or have heard of it vaguely without understanding the mechanism well enough to choose the right treatment.

Understanding the biology precisely changes the decision you make.

What DHT Is and Where It Comes From

DHT — dihydrotestosterone — is a potent androgen produced when the enzyme 5-alpha reductase (5-AR) converts testosterone into its more active form. Both men and women produce testosterone; both therefore produce DHT. The difference is in concentration — men produce significantly more, which is why DHT-driven hair loss is more common and more severe in men.

Two types of 5-alpha reductase exist. Type I is found in sebaceous glands across the scalp. Type II is found in the hair follicle itself — and is the primary driver of DHT-related follicle damage. This distinction matters for treatment.

How DHT Destroys Hair Follicles

DHT binds to androgen receptors in the dermal papilla cells — the cellular cluster at the base of each hair follicle responsible for sending growth signals to the follicle stem cells above it.

In follicles that carry the genetic sensitivity (determined by the AR gene, inherited from either parent), DHT binding activates a cascade that progressively shortens the anagen (growth) phase and increases the telogen (resting) phase with each successive hair cycle. With each cycle, the follicle also physically miniaturises — producing a slightly thinner, shorter hair than the cycle before.

Over time — measured in years — this miniaturisation reaches a terminal point. The follicle stops producing visible terminal hair. The follicle itself still exists but produces only vellus hair — the fine, colourless, barely visible hair of a bald scalp. This is the moment most people think of as permanent hair loss.

Critically, the follicles are not dead at this point. They are just severely miniaturised. This is why hair transplants work — transplanting follicles from DHT-resistant areas of the scalp (the back and sides) to DHT-sensitive areas at the crown and temples.

The Genetic and Gender Dimensions

DHT sensitivity is polygenic — influenced by multiple genes, primarily on the X chromosome and chromosome 20. The persistent myth that hair loss is inherited only from the maternal grandfather is false. Hair loss genes can be inherited from either parent, and the expression is influenced by the interaction of multiple variants.

In women, the pattern of DHT-driven hair loss is different. Because women have lower testosterone levels, DHT concentrations are lower and follicle miniaturisation is slower and more diffuse. The characteristic pattern in women is crown thinning with frontal hairline preservation — often visible as a widening central part rather than a receding hairline.

In India, where PCOS affects approximately 1 in 5 women of reproductive age, elevated androgen levels from PCOS significantly accelerate this process, making DHT-driven hair loss increasingly common in Indian women under 35.

Pharmaceutical DHT Blockers: Finasteride and Dutasteride

Finasteride inhibits Type II 5-alpha reductase, reducing scalp DHT levels by approximately 70%. It is the most effective pharmaceutical DHT blocker available for hair loss. Clinical studies consistently show it slows or stops progression in 83–90% of men and produces regrowth in 66%.

Trade-offs: a minority of men (2–4% in clinical trials, with higher rates in observational studies) experience sexual side effects including reduced libido and erectile dysfunction. These are typically reversible on stopping, though post-finasteride syndrome — a persistence of side effects — has been reported. Finasteride is also contraindicated in women of childbearing age due to teratogenic risk.

Dutasteride inhibits both Type I and Type II 5-alpha reductase, reducing DHT more comprehensively (by approximately 90%). More effective than finasteride, with a similar side-effect profile. Not licensed for hair loss in India, though commonly prescribed off-label.

Both require prescription and ongoing dermatological supervision.

Natural DHT Blockers: Saw Palmetto

Saw Palmetto (Serenoa repens) is the most clinically researched natural 5-alpha reductase inhibitor. Its active compounds — fatty acids and phytosterols, primarily beta-sitosterol — inhibit approximately 32% of Type I and 38% of Type II 5-alpha reductase at therapeutic doses. The same mechanistic pathway as finasteride, but at a more modest level.

Clinical evidence: A 2012 study in ISRN Dermatology found oral Saw Palmetto supplementation increased hair count in the majority of participants with androgenetic alopecia over 24 weeks. A 2025 randomised controlled trial confirmed significant improvements in hair density and quality vs placebo using standardised Serenoa repens extract.

The practical comparison: Finasteride is substantially more potent. Saw Palmetto is substantially safer. For men with early-stage androgenetic alopecia who are concerned about finasteride's side-effect profile, Saw Palmetto represents the most evidence-backed alternative. For women with DHT-driven hair fall (including PCOS-related), it is the appropriate topical/supplement option without the contraindication risks of pharmaceutical alternatives.

An Indian dermatologist review published in the Indian Journal of Drugs in Dermatology confirmed Saw Palmetto's mechanism extends beyond 5-AR inhibition to include direct reduction in DHT uptake by the hair follicle and anti-inflammatory effects at the follicle level — making it relevant for both the hormonal and inflammatory components of androgenetic alopecia.

How Procapil Addresses DHT

Procapil contains Oleanolic Acid derived from olive leaf — a natural compound with documented 5-alpha reductase inhibiting properties. While less potent than Saw Palmetto as a standalone DHT blocker, Procapil's three-component action addresses DHT inhibition alongside follicle anchoring (Biotinoyl Tripeptide-1) and scalp microcirculation improvement (Apigenin) — making it a multi-mechanism active rather than a single-pathway approach.

The Cerise Anti Hair Fall Serum: Dual DHT Action

The Cerise Naturals Anti Hair Fall Serum contains both Saw Palmetto 2% and Procapil 2% — providing DHT inhibition through two separate mechanisms simultaneously, alongside Anagain, Biotin, and Keratin for follicle and strand support. No prescription required. Applied daily to the scalp.

For cases where follicle reactivation alongside DHT management is the goal, the Intense Growth Hair Serum with Redensyl and Aminexil targets dormant follicle stem cells to support re-entry into the anagen phase.

Timing Is Everything

The fundamental truth about DHT-driven hair loss: follicle miniaturisation is reversible in its early stages and much harder to reverse in advanced stages. A follicle that has been in vellus-only production for years has undergone significant structural change. A follicle that has only recently begun miniaturising can often be stabilised or partially restored.

Starting a DHT-management approach at first signs of thinning — rather than after visible baldness has established — is the single most important variable in long-term outcome.