Perricone MD Essential FX Deep Crease SerumPerricone MD Essential FX Deep Crease Serum A highly potent serum with a silky, luxurious texture to smooth even the most stubborn, deep set lines, wrinkles and creases, including marionette lines, frown lines, smile lines and nasolabial folds. 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