I’ve been using this serum every day for almost a month now, after cleansing and before sunscreen in the daytime, then after cleansing and before moisturizer in the evening. At first, I thought, How special can a moisturizing serum be? But I didn’t realize just how much my skin would benefit from this extra moisturizing step. No matter how hard I try to stay out of the sun, outdoor dinners, drinks and catch-ups with friends mean my skin has felt rather frazzled this summer. To keep my breakouts under control, I also sometimes use tretinoin, a high-strength retinoid that can make skin dry. Incorporating this serum into my routine has helped to alleviate parched areas and flaky pieces of skin typical of retinoid use.