Caffeine shampoos show comparable results to Minoxidil and may enhance its effects when used together. Caffeine can be detected in the scalp up to 24 hours after a 2-minute application, making it an affordable treatment option.
So maybe vitamin D is important here
This conversation discussed the user's successful results from a combination of treatments, including finasteride, minoxidil, ketozolin shampoo, Vitamin D and biotin. The discussion also included advice about frequency and dosages for these treatments.
Salicylic acid in Nioxin shampoo may reduce minoxidil effectiveness by inhibiting sulfotransferase activity, potentially causing hair loss. Users suggest stopping salicylic acid use or trying alternative treatments like high-concentration tretinoin or medicated minoxidil/finasteride shampoos.
Salicylic Acid shampoo may hinder topical minoxidil but not oral minoxidil, which works through the liver. The user plans to continue using oral minoxidil and is concerned about the shampoo's effect on it.
Minoxidil users can safely use salicylic acid shampoo to manage scalp pimples and dandruff. Nizoral is also recommended for hair gain and treating scalp pimples.