AmLactin XL Moisturizing Lotion contains Ultraplex formulation, a proprietary blend of alpha-hydroxy moisturizing compounds. AmLactin Cream is a special formulation of 12% lactic acid, neutralized with ammonium hydroxide, to form ammonium lactate that provides a cream pH of 4.5 - 5.5. Lactic acid, an alpha-hydroxy acid, has been reported as an effective, naturally-occurring humectant in the skin. It has beneficial effects on dry, scaly skin and itching associated with this condition