What it is: A retinoid serum that fights the signs of aging and improves the look of congested and UV-damaged skin.What it does: This serum combines 5% retinoid ester blend, 1% liposomal-encapsulated retinol blend and 0.5% blue green algae with retinoid-alternative activity. Encapsulated CoQ10 helps to improve the appearance of aging or damaged skin, while Hawaiian white honey, bisabolol, cactus extract and ginger balance and soothe the skin for a calmer, more even-toned complexion. How to use: Apply 1 to 2 pumps in the evening to clean to dry skin. New retinoid users should use two days on, two days off. Work your way up to every other day, then to daily evening use. Advanced retinoid users should use daily in the evenings. Follow with a hydrating oil or moisturizer. Use an AHA serum on alternate nights to sweep away dead skin cells. For sensitive skin, apply a few drops of a gentle, hydrating oil to your skin before applying the serum. 1 oz. Sulfate-free; paraben-free; SLS-free; SLES-free; gluten-free Cruelty-free Made in the USA Sunday Riley is a Certified B Corporation, which meets standards for verified social and environmental performance, public transparency and legal accountability to create a more inclusive and sustainable economy