Hairs don't need DHT to grow, body hairs need DHT to transition from vellus to terminal, but afterwards it is not needed, simply having testosterone is enough. This means nothing for scalp hair because it's site-specific. There is no DHT at 1 years old when your scalp hair starts growing. If there was then your body hair would start growing too. People who are born without the ability to produce 5-ar2 and DHT don't present with body hair, but they grow a normal head of hair and never go bald. It's pretty clear that whatever the reason, DHT is good for body hair, but bad for scalp hair, and it's not required for scalp hair to grow.no, all hairs need DHT to grow. body hair is an example.
scalp hairs have DHT a lot of years before puberty, sebaceous gland need this hormone to make sebum.
Till scientists dont take the idea never we shall advance.....
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