What it is: A high-strength retinoid formula that rapidly firms and smoothes skin while noticeably reducing the appearance of dark spots.Who it's for: Ideal for all skin types; recommended for experienced users of retinoidsWhat it does: The serum helps refine skin texture while targeting uneven tone and boosting luminosity for brighter, more even-looking skin. How to use: Apply a pea-sized amount to clean, dry face and neck in the evening. Avoid the eye contour and contact with eyes. Start with a weekly application and gradually increase to twice a week, a few days apart, as tolerated by your skin. Apply a moisturizer afterward. Do not use with other retinoid products. Use sun protection during the day. If irritation occurs, rinse off, cease use and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. 0.5 oz. Made in Canada