Clinically Validated Trifecta of Powerhouse Skin-Smoothing Ingredients. Exfoliants work great together, but their different compositions don’t always mix. Murad's team of experts formulated a bi-phase peel that, when shaken, blends a resurfacing retinoid and glycolic acid with salicylic acid to gently yet effectively help clarify pores and improve surface cell turnover for smoother skin. *After 4 weeks. Which skin type is it good for? Balanced Oily Combination Dry