Great & genle exfoliator Takes all the dry flaky skin right off & is pretty gentle for a professional product. I t ha helped clear up minor bumps & reduced pores on my skin . I have never has more that a little tingling ^ I have left it on hours , not just the 20 mins suggested/ Test fist to see if it bothers you but it a big bottle , Lasts a long time & keeps my skin looking years younger.