DHT (Dihydrotestosterone)
The hormone that grows beards and thins scalp hair — the biological reason beards and balding correlate.
DHT (dihydrotestosterone) is a potent androgen produced from testosterone. It stimulates beard follicle growth while shrinking scalp follicles in genetically susceptible men. This is the biological reason many men with thick beards experience male pattern baldness — same hormone, opposite effects on different follicles.
- ›Converted from testosterone by 5-alpha reductase.
- ›Grows beard follicles, thins scalp follicles.
- ›Explains beard-baldness correlation.
- ›DHT-blockers (finasteride) help scalp but reduce beard growth.
- ›Levels are largely genetic, minimally lifestyle-modifiable.
Full entry coming soon — our editors are finishing it now.
History & Origin
Dihydrotestosterone was characterized in the 1960s, and the discovery that men lacking the converting enzyme 5-alpha-reductase did not develop male-pattern baldness led directly to finasteride. DHT is the paradox at the center of hair biology: the same androgen that drives beard growth also miniaturizes scalp follicles in genetically susceptible men.
Uses & Benefits
- ›Converted from testosterone by 5-alpha-reductase in skin and tissue
- ›Drives the transition of fine facial hair into thick terminal beard hair
- ›Miniaturizes genetically susceptible scalp follicles, causing pattern baldness
- ›Explains why beard density and scalp thinning often appear together
- ›Targeted by 5-alpha-reductase inhibitors used for hair loss and prostate conditions
Safety & Sourcing
Nothing you apply to your face raises DHT or its receptor sensitivity, and no supplement reliably does either. Drugs that block DHT — finasteride and dutasteride — have documented side-effect profiles and are prescription decisions with a clinician. Do not pursue hormonal manipulation for cosmetic beard density.
FAQ
Does more DHT mean a thicker beard?+
Not in a man with normal hormone levels. Receptor sensitivity in facial skin sets the limit, and that is genetic.
Why do some men with thin hair have thick beards?+
The same androgen stimulates beard follicles and miniaturizes susceptible scalp follicles. One hormone, opposite effects in different tissue.
Do DHT-blocking shampoos work for beards?+
There is no good evidence that topical 'DHT blockers' change beard density, and blocking DHT on the face would work against beard growth anyway.
Related Comparisons
Sources
- Marks, L. S. (2004). 5-alpha-reductase: history and clinical importance. Reviews in Urology.
- Randall, V. A. (2008). Androgens and hair growth. Dermatologic Therapy.
