No not like a primer, more like magic fluid which is light enough to be used anywhere for anything, gives you some glow back if you're too matte, livens up eye shadow (apprantly, havn't tried it yet), makes foundation apply more smoothly because it glides on with the moistness of it but not because it acts like a primer. Just get it, i can't imagine anyone regretting it, even if you don't like it you can just use it for the refreshing feeling on your face.