Isopropyl alcohol should not replace ethanol in homemade topical finasteride serums due to potential toxicity with frequent use. Denatured ethanol, also known as parfum or cosmetic alcohol, is a safer alternative.
A female user is experiencing hair loss from the root and dead ends, likely due to post-partum effects, ankylosing spondylitis, and low iron. She seeks advice on improving hair health before going fully blonde.