This is a derivative of retin-A. It is not only great for zits, which is what it was prescribed for, but it is great for wrinkles and melasma! This one tube had transformed the dark melasma and lightened the areas like nothing else I have ever used. This will make you break out like a teen when you first begin using it, but stick with it!! It’s awesome. Remember this, if you wax, you need to stop using for a week prior. It will take the top layer of your skin off if you don’t!!