I bought this used it as directed..didn't do anything to my skin whatsoever..no tingle, no pinkness,no burning...it was as if I put water on my skin...tried it again left on half hr...again nothing..I don't know if I got a bad batch but it was a waste of time and money...I won't buy again to see, because I don't want the same results...I wanted it to work, but was VERY disappointed. Originally posted on www.theordinary.com