philosophy microdelivery in-home vitamin c peptide 2 piece is a two-step, in-home peel that resurfaces and rejuvenates sun-damaged, hyperpigmented and ageing skin. what makes this next generation microdelivery peel so revolutionary is that unlike peels of the past that only exfoliated, this peel delivers peptides and vitamin c to the skin as it is being rapidly exfoliated. it is resurfacing and replenishing the skin at the same time, which is a new approach to skin rejuvenation, and best of all, it involves absolutely no downtime.