So my dermatologist prescribed me a 4% benzoyl peroxide face wash when I already told him I've used benzoyl peroxide products before and they've NEVER worked. The product that he prescribed me to was made by the Stiefel company, and I've used their Panoxyl 5% benzoyl peroxide before that never worked! I also went online to compare the ingredients in my prescribed face wash to the one that they have in Panoxyl 5%, which you can buy at a drugstore, and the ingredients are almost exactly the same! Should I go back and complain to my dermatologist? I doubt this face wash would work.