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Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.

Hair regrowth on wounded and bald skin may be possible by activating the sonic hedgehog gene, leading to hair regrowth in mice. The findings are promising but may not directly apply to humans.

P-1075 is a more potent hair growth agent than Minoxidil, but it poses significant heart risks, making it unsafe for use. Despite promising results in macaques, concerns about its cardiotoxicity in rats have halted its development.

The user is using a combination of 7% minoxidil, 0.2% finasteride, 0.5mg finasteride, RU58841, and daily microneedling but is not seeing hair regrowth after 5 months. Suggestions include being patient, reducing microneedling frequency, considering oral minoxidil, and possibly switching to dutasteride if no improvement after a year.

Topical finasteride that doesn't penetrate the skin could potentially treat hair loss without side effects. Current challenges include finding a formulation that remains on the scalp without increasing blood levels.