I've been using various combinations of apha hydroxy acids and salicylic acid over the years. I still get acne during the summer but these acids lessen it significantly. My skin is brighter, smoother, and clearer, although I do have some acne scarring. Sometimes i'm using retinol instead of acids. I don't have any wrinkles, and I don't stay out in the sun. Now that I'm older my skin tends to discolor easily after a blemish, and acids lighten these marks. Mostly anyone does not rinse this one off but I like how my skin feels after I let it dry and put my moisturizer on.