Myth: Sebum causes male pattern baldness
There is a relationship between sebum and DHT, but not between sebum and male pattern baldness. DHT is found in the sebum in a high concentration because DHT is soluble in fatty substances such as sebum. But the sebaceous glands are superficial to the hair follicles and the DHT in the sebum does not affect the hair follicle. Damage due to DHT occurs at the base of the hair follicles, where testosterone is converted into DHT via types 1 and 2, 5 alpha- reductase enzymes. Routine shampooing or otherwise removing sebum will not prevent or reverse male pattern baldness.