I have loved every Philosophy product I've ever tried; they are basically the only ones that work without irritating my sensitive, dry, acne-prone skin. I use When Hope is Not Enough serum, Hope in a Jar moisturizer and Help Me topical retinol treatment every day, and the regimen has done amazing things for my skin. Based on the rave reviews for this product, I purchased with high hopes and used a couple of times mixed with Hope in a Jar. Unfortunately, it stung on application and caused some liSee full review