A great exfoliant!
I saw a difference after 2 applications!  My only criticism is the jar packaging.  Exposure to air tends to destroy antioxidants; tube packaging would have made this a superior product.  But, that aside, it wears beautifully under makeup during the day and mingles nicely with my moisturizer and antioxidant oil at bedtime.  It's non irritating despite it's high Glycolic content.
Rating: 5 stars