Never used Description from the Beauty Pie website: Looking for one serum to solve all your (skin's) problems? ‎Perfectly balanced to both revive and replenish, this ultra-gentle encapsulated retinol serum is infused with lactic and hyaluronic acids, and a concentrated, barrier-repairing ceramide blend to help protect, brighten, hydrate, smooth fine lines and soothe your skin. For a detailed breakdown of retinol percentages and optimizing it for your skin type, read this. Show less 1.69 fl. oz. Made in Switzerland Suitable for all skin types. Excellent to apply on both your face and neck.