New to NeoStrata are the 5% Glycolic Acid Encapsulated Smoothing Lotion and Smoothing Cream and the 10% Glycolic Acid Encapsulated. The difference between the 5% and the 10% Glycolic Acid is that the 5% is meant for people with sensitive skin and has a gentle release and the Glycolic acid is delivered with efficacy but with no irritation or stinging. The 10% has a greater percentage of  Glycolic Acid, which is the highest concentration allowed for sale at retail. Second question you might be…