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PP405, a topical treatment, shows promise for hair growth by activating inactive follicles, with 66% of participants experiencing positive results. The treatment is well-tolerated and may proceed directly to Phase 3 trials, offering a potential alternative to minoxidil and finasteride.

The conversation is about whether treatments like finasteride, dutasteride, and minoxidil can make single hair follicles produce multiple hairs again. The user is curious if these medications can thicken hair and prolong the growth phase.

PP405 is not a cure for hair loss but may reactivate dormant hair follicles, similar to minoxidil. It is unlikely to help with miniaturized or vellus hairs and is still in trial phases, with availability expected around 2030.

Minoxidil helps hair growth by increasing blood flow and prolonging the growth phase, but it doesn't address the root cause of hair loss, such as DHT sensitivity. Finasteride can help maintain some gains by blocking DHT, but stopping Minoxidil often leads to hair loss because the new hairs are dependent on it.

Finasteride prevents further hair loss by blocking DHT, while minoxidil stimulates hair growth by prolonging the active phase of hair follicles. Stopping minoxidil can lead to loss of regrown hair because finasteride does not address the same growth mechanism.