•Pure concentrated active hyaluronic acid with 4 molecular weights (1.25%): •3-LURONIC Technology (hyaluronic acid of 3 molecular weights) to which a cross-linked hyaluronic acid molecule is added, containing up to 50 times more water than a single molecule, instantly multiplying the skin's water reserves and stimulating the production of collagen and elastin. The combination of 4 molecular weights of hyaluronic acid allows it to act deeply in the different layers of the epidermis; •Niacinamide (0.8%) and Provitamin B5 (0.5%) enrich the formula, strengthening the skin's defenses, preventing redness and providing a radiant complexion. Hydrated, revitalized, softer, visibly firmer and smoother skin. For face and neck with an immediate firming effect Benefits: NOW • +28% dehydration and +6% skin firmness in a single application FOREVER • Firmer and smoother skin in 58% of people within 2 months Application method: Use undiluted by applying a few drops to a clean, dry face, in the morning and/or at night. Let it be absorbed with circular movements from the center to the outside of the face. Massage the product into your neck as well.