The Fix + works amazing to set your make up and give you a very beautiful dewy look or just a nice "pick-me-up" when you are feeling tired. I use it for two purposes, 1.) to finish my look and set make up, it gives my face a natural dewy look and 2.) I use it after moisturizer (as the final step) to just make my skin look/feel refreshing and glowy. It has caffeine in it as well as cucumber extract and other minerals. I've heard of some girls using this on their hair to calm the frizzies as well as mixing the Fix+ with their eyeshadow & pigments to give it a more intense color. I love the scent of it too, it smells really good. MAC Fix+ is an absolute MUST HAVE!