Avene Hydrance Boost Concentrated Hydrating Serum in Beauty: NA. Avene Hydrance Boost Concentrated Hydrating Serum in Beauty: NA. The new Hydrance Boost Serum enriched with Hyaluronic Acid and Vitamin B3 instantly provides skin with a boost of intense hydration while replenishing natural moisture levels to provide long-lasting hydration for 48 hours. Suitable for dry skin. Targets concerns of hydration. Formulated without parabens, alcohols, wheat, mineral oils, aluminums, silicones, and non-comedogenic. 1 fl oz. Use as a daily hydration booster serum morning and/or evening. Dispense 1 to 2 drops and apply evenly to cleansed face, eye contour, neck and neckline. Use alone or as a booster to following hydrating skin care products. AENE-WU34. P0007700. Avene has over 270 years of expertise in caring for sensitive skin and is trusted by millions worldwide. At the heart of the brand is Avene Thermal Spring Water, a natural soothing source clinically shown by over 150 studies to soothe, soften and calm the skin.