Why have both ketoconazole and salicylic acid in the same shampoo?
A. Ketoconazole and salicylic acid may act synergistically. Since the salicylic acid can remove some of the dead skin layers of the epidermis, the ketoconazole can be more effective in reducing the DHT in the scalp. Using Regrowth Treatment Shampoo alone gives you the combined benefits of both Nizoral® 2% shampoo and Neutrogena T-Sal® shampoo.
