The best product for dry skin is the Lactic/50 (either in peel or roll-on). Lactic acid works as a humectant, pulling moisture from the air and dermis and holding it in the outer layers of skin. This allows it the Lactic acid is to gently exfoliate the skin without being drying.
Other Benefits: It helps wrinkles by stimulating collagen production. Studies have show after 6-8 weeks of use the thickness of the collagen within the skin is 20-30% greater. This helps to improve the texture of the skin by smoothing fine wrinkles.
The Lactic acid is also gentler than the glycolic, which makes it great for people with drier skin.