What it is: A 10% multi-acid serum that works overnight and over time to exfoliate, resurface and moisturize, leaving skin glowy, smooth and soft.What it does: The gentle, high-strength serum delivers intense resurfacing as it targets skin tone, uneven texture, wrinkles, dullness, spots and clogged pores. The velvety formula comforts skin with a restoring 'desert milk' made of soothing, moisturizing extracts of Kalahari melon, jojoba and aloe as well as oat beta-glucan, hyaluronic acid and squalane. Bonus: Sleep Milk has none of the stickiness or powerful irritation of typical AHA serums, even as it sweeps away dead skin cells and debris for a dewy-fresh glow.Key ingredients:- Free-Form and Encapsulated Glycolic Acid: exfoliates immediately and over time to improve skin texture and tone- Lactic Acid: exfoliates skin surface and moisturizes at once- Desert Milk: soothes, moisturizes, softens and smoothes skin- Squalane: hydrates skin, improves skin barrier function and prevents moisture loss- Piperonyl glucose: calms skin to discourage pigmentation and dark spotsResearch results:In a four-week, third-party clinical study of 30 women between the ages of 35 and 65:- Clinically proven to significantly increase skin moisture in 100% of subjects immediately and over timeIn an eight-week, third-party clinical study of 30 women between the ages of 35 and 65:- Clinically proven to improve the look of dark spots, skin brightness and skin tone without dryness or irritationHow to use: Smooth one to three pumps over your cleansed face, neck and chest in the evenings. Use four times a week to start, working up to nightly use. Some tingling may occur (glide moisturizer on top if you need it). Always wear sunscreen in the mornings but especially after using this serum. 1 oz. Paraben-free; phthalate-free; silicone-free; synthetic fragrance-free Made in the USA