Essential Fx Acyl-Glutathione Deep Crease Serum is designed to target the most stubborn deep-set lines, creases and wrinkles, including deep forehead wrinkles. This intensely hydrating deep wrinkle serum is formulated with Acyl-Glutathione to help reduce the look of deep wrinkles and creases by protecting and replenishing skin. Imperfections appear shallower and expression lines appear erased while a Vitamin F Blend restores suppleness by visibly improving the skin’s moisture barrier.