Cannabis and THC may have mixed effects on hair, with some studies suggesting potential negative impacts on hair growth in isolated hair follicles, but these results are hard to apply to living humans. Treatments like minoxidil and finasteride are commonly used for hair loss, and the effects of cannabis might be neutral or vary based on individual factors.
Age-linked hair loss is linked to disappearing collagen. Treatments discussed include minoxidil, finasteride, RU58841, tretinoin, microneedling, and collagen supplements.
HairClone is developing cell replacement treatments to rejuvenate and generate hair follicles, and has launched a crowdfunding campaign. A user expressed skepticism about the need for crowdfunding.