Easily firm, lift and smooth your skin with Yon-Ka's Advanced Optimizer Duo. Harnessing the power of plant peptides and hyaluronic acid, this kit boosts collagen production while keeping your skin deeply hydrated. Yon-ka's Advanced Optimizer Duo includes:Advanced Optimzer Serum (1. 01 fl. oz. ): a firming facial serum that reactives the skin components responsible for firmnessAdvanced Optimzer Creme (1. 35 oz. ): a firming face cream for smoother, redefined facial contoursKey Ingredients:Hibiscus Peptides: stimulate collagenLupine Peptides: protect collagenSoy Peptides: smooth and restructureHyaluronic Acid: hydratesShea Butter: repairs and protectsKey Benefits:LiftsFirmsRegeneratesRevitalizesHydrates | Yon-Ka Paris Skincare Advanced Optimizer Duo (2 piece) | Dermstore