High Potency Classics Face Firming Serum, previously available only through dermatologists, is formulated with the highest potency active ingredients. Considered by devotees to be the best wrinkle serum to help visibly minimize wrinkles. Delivers a luminous, vibrant, fresh complexion. The unique power of this anti-wrinkle serum lies in its multiple sciences. alpha lipoic acid, a powerful antioxidant, improves the appearance of the depth of a wrinkle. DMAE tackles the length and width of a wrinkle by visibly lifting and firming the look of skin. Hyaluronic acid adds to the multi-tasking power of this wrinkle serum, resulting in an anti-wrinkle serum that is intensely hydrating and exceptionally effective. So potent you may feel a slight tingling after application.