Using severe acne treatment on non severe acne?

OK I don't have that much acne its definitely not severe and I want to use a product that I have tried before and it worked. its acne-free terminator for severe acne. however I don't have severe acne but I know the product works for me. So what would happen if I use severe acne treatment on non severe acne?? will the acne get severe or will my skin hurt or what? THANK YOU!!!!