This is a completely non-abrasive leave-on exfoliant that gently and naturally helps shed built-up layers of dead skin. This unique formula revitalizes skin's surface, creates noticeable radiance, smooths the appearance of wrinkles and makes your skin look and feel remarkably soft. SKIN PERFECTING 8% AHA Gel also helps keep skin hydrated by removing dead skin and softening the skin's surface, making it more receptive to moisture. With ongoing use, it can help promote firmer-looking skin and a more even skin tone and improve skin's natural exfoliation processes. It combines the exfoliating benefits of glycolic acid with a sheer weightless gel formula that provides long-lasting hydration and dramatically improves the smoothness of skin. It contains skin-soothing plant extracts, like chamomile flower, and powerful antioxidants, like green tea, which-combined with the exfoliating properties-can help minimize the look of discolorations and age spots. In addition, with continued and consistent use, you'll notice a dramatic improvement to the skin's firmness. This should be a staple in the routine of anyone with dry, rough or sun-damaged skin. This exfoliant has an optimal pH range of 3.5-3.9. All Paula's Choice products are 100% fragrance free, non-irritating, and never tested on animals.