Sunburns on the scalp can cause permanent hair loss, especially for those using Tretinoin or Tacrolimus. Wearing UPF 50+ hats is recommended to protect against UVradiation.
Androgenic alopecia (AGA) might have evolved to reduce prostate cancer risk by increasing UV exposure to the scalp, but this theory is debated. Treatments like minoxidil and finasteride are used for AGA, though the exact causes and evolutionary reasons for hair loss are unclear.
Korean scientists developed a red light therapy that reduces a hair loss marker by 92%. Users discussed the benefits and drawbacks of natural sunlight versus red light caps for hair health, with some suggesting supplements for vitamin D.
User shared before-and-after photos showing significant hair regrowth after using finasteride 1mg daily, minoxidil 5% twice daily, and Nizoral 2% weekly for almost a year. The user noticed more defined and darkening regrown hairs, indicating a new hairline.
Minoxidil users discuss skin-care routines to counteract side effects like dark circles and dull skin. Recommendations include vitamin C, potassium, collagen, retinol, nizoral shampoo, and emu oil.