Single peel a deep peel using either a choice of glycolic lactic or mandelic acid at 40 strength this advanced gel formula allows the acid to remain on your skin for longer so that it can work at a much deeper layer giving a brighter and clearer complexion peels are great for reducing acne pore size fine lines 38 wrinkles and for overall skin healthtreatment time is 30 minutes combination peel a combination of all 3 peels glycolic lactic 38 mandelic for a deeper peel skin w