Sunday Riley Good Genes All-in-One Lactic Acid Treatment

New, sealed. This multi-tasking, targeted lactic acid treatment exfoliates and helps reveal youthful-looking radiance, while visibly reducing the look of lines and wrinkles. How do I use it: Good Genes Lactic Acid Treatment: After cleansing, apply one to two pumps to dry skin, day or night, as a leave-on treatment. For those with sensitive skin, use Good Genes Lactic Acid Treatment as a mask. Apply one to two pumps to clean, dry skin and leave on for 15 minutes. Rinse well and pat dry.