I originally liked this product, and ordered the full size bottle. About two months of using it and one day all of a sudden, my face started tingling and within 24 hours my face was beet red and it felt like I had been in the sun for hours. I actually lost a couple layers of skin. I cut out all of my skincare products for two weeks and began reintroducing them one by one.. never using more than one at a time, to try and single out the culprit.
It was probably three weeks between the original burn and trying this serum again. And I burned again!
I'm assuming that for most people it's fine, but there is clearly something in this product that my skin does not like.