The Effect of the Drug Minoxidil on Hair Growth

Minoxidil was applied to a single miniaturized hair follicle over four months, resulting in less miniaturization but not yet terminal growth. The user used a 5% minoxidil solution, specifically the Regaine brand, and observed changes using a handheld WiFi microscope.

Minoxidil may inhibit androgen receptors and affect hormonal pathways, potentially explaining its effectiveness in treating androgenetic alopecia (AGA). Users discuss its varying effectiveness on scalp versus facial hair and note fewer side effects with topical use compared to oral.

Minoxidil increases blood supply to the scalp, strengthening dormant follicles and extending the growth phase, but may increase scalp activity that can be countered with DHT blockers. Women experiencing side effects from finasteride or dutasteride for hair loss might consider alternatives like estrogen, especially if on birth control.

The user experienced side effects from oral minoxidil, such as palpitations and insomnia, and switched to topical minoxidil, which led to noticeable hair regrowth, especially at the hairline. They also use finasteride and observed increased hair shedding initially, which later stabilized.

Alcohol-based minoxidil absorbs better but can cause irritation; non-alcohol-based is gentler. Topical dutasteride shows promise but needs more research; low-dose oral minoxidil (0.25 mg/day) is effective with fewer side effects. Ingredients like Procapil, Redensyl, caffeine, and Anagain in shampoos have limited evidence; ketoconazole shampoo can help when used 2-3 times a week with other treatments.

A 31-year-old man using finasteride for a year is considering adding oral minoxidil or switching to topical minoxidil to address diffuse thinning, while also using a scalp massager and ketoconazole shampoo. Concerns include cardiovascular side effects, pet safety with topical minoxidil, and cost of telehealth services.