community Is Tretinoin (.1%) + Topica Dutasteride (.1%) + Ketoconazole (2%) in one topical solution safe?
User discusses a topical hair solution containing Tretinoin, Dutasteride, and Ketoconazole, and asks if it's safe to combine and leave in hair. Concerns include Ketoconazole being left in hair and Tretinoin's effects with Dutasteride and Ketoconazole.