Additional Details ------------------------------ Product description: What Does Hyaluronic Acid Do? Hyaluronic Acid is naturally produced by our bodies and plays a critical role in skin's youthful look. It's natural production rapidly decreases as early as late 20's which can lead to lack of firmness and dryness. Hyaluronic Acid is a dermatologist-recommended ingredient that attracts a high level of moisture. It's a big molecule and therefore needs to be adapted to be absorbed by the skin. The formula has been designed to provide a dual plumping and hydration effect by combining hyaluronic acid of both high and low molecular weight. 0.5% High Molecular Weight Hyaluronic Acid will remain on top of the skin, without a tacky feeling, to help lock-in moisture for dewy-looking skin. 1% Low Molecular Weight Hyaluronic Acid absorbs more easily to help smooth skin texture and instantly replump skin. This formula has also been developed and tested to be safe for sensitive skin. Revitalift Derm Intensives products were validated in partnership with an advisory panel of dermatologists who certified the Ingredient Charter, Formula and Product Development, Independent Clinical Testing Protocols and Results. How to Use: After cleansing, hyaluronic acid should be the immediate next step before any other treatments or moisturizers. Every morning and evening, apply 2-3 drops to the face and neck, avoiding the eye area. For best results, follow with Revitalift Triple Power Day Cream. Can be used for additional hydration before applying Revitalift Derm Intensives 10% Vitamin C Serum, 10% Pure Glycolic acid serum or Night Serum with Pure Retinol. Hyaluronic Acid Serum is an anti aging face serum for visibly plumped skin Lightweight hydrating serum absorbs quickly with no tacky feel or leftover residue Visibly plumps skin, reduces wrinkles Paraben and fragrance free This formula is developed and tested to be effective for all skin tones