3D Modelling for Solar Erythemal UV Protection Provided by Human Hair

Male-pattern baldness might increase UVB exposure on the scalp, potentially affecting vitamin D and skeletal health. The hypothesis is debated, with some seeing it as a minor benefit in specific contexts.

A 22-year-old male experiencing diffuse thinning is using oral minoxidil and finasteride but notices his hair looks thin in sunlight. Suggestions include using hair products, considering topical minoxidil, addressing seborrheic dermatitis, and possibly trying dutasteride or a hair transplant.

The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.

The conversation discusses differences in hair shaft diameter and density between thinning and denser areas on the scalp. Treatments mentioned include Minoxidil, finasteride, and dutasteride.

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.

A user is experiencing hair loss and estimates a 40% loss in the front and 50%-60% on the crown. They are using oral minoxidil, topical finasteride, keto shampoo, microneedling, and LLLT for treatment.