Lancôme Visionnaire Crescendo 2 Phase Progressive Night Peel combines two formulas to be used over 28 nights as part of a skin training regime to leave your skin feeling smoother and more even. It gently exfoliates the skins surface cells to address skin concerns. It targets the appearance of pores, dark spots, skin texture, fine lines and wrinkles. This leave-on liquid nighttime facial peel features a dual-phase formula to gently exfoliate skin surface cells. Phase 1 contains 5% bio-acids.