A highly effective serum with a silky, luxurious texture that smooths even the most stubborn, deep lines and wrinkles, including marionette lines, frown lines, laugh lines, and nasolabial folds. Essential Fx Acyl-Glutathione Deep Crease Serum is formulated to smooth the most stubborn, deep lines and wrinkles, including deep forehead wrinkles. This intensely moisturizing serum for deep wrinkles is enriched with acyl-glutathione to reduce the appearance of deep wrinkles and lines by protecting and regenerating the skin. Skin irregularities appear smoother and expression lines are diminished, while a vitamin F blend restores suppleness by visibly improving the skins moisture barrier.