As good as being born with flawless skin: Sunday Riley Good Genes All-In-One Lactic Acid Treatment. Formulated with high potency, purified grade Lactic Acid, this cult favorite treatment serum immediately exfoliates dull, pore-clogging dead skin cells to reveal smoother, fresher, younger-looking skin. Fine lines appear visually plumped while the skin looks significantly more radiant. With continued use, the appearance of stubborn hyperpigmentation and visible signs of aging are reduced, unveiling a clearer, healthier-looking complexion.