This moisturizing Hyaluronic acid cream base contains a gentle but extremely effective retinoid (Vitamin A) to improve the appearance of fine lines and wrinkles and stimulate collagen and elastin production. The addition of Niacinamide enhances microcirculation, moderately inhibits melanin production, increases barrier lipid levels for optimal skin moisturization, and reduces redness and inflammation. Level 2 is for the advanced user and it is recommended to use every other night or every night as tolerated. It is natural to experience dry, tight, flaky, and possibly red skin as you acclimate to the use of Vitamin A. If you have not used Vitamin A before, please start with level 1.