New/unopened and sealed. SkinCeuticals Hyaluronic Acid Intensifier Hydrating Serum full size. I purchased too many! Product Description: SkinCeuticals Hyaluronic Acid Intensifier Hydrating Serum is a multi-beneficial corrective serum proven to amplify skin's hyaluronic acid levels. Its potent blend of highly concentrated pure hyaluronic acid, proxylane™, and botanical extracts of licorice root and purple rice boosts skin's hyaluronic acid levels, improves skin texture, delivers surface hydration, and helps to improve the visible appearance of firmness, smoothness, and facial plumpness. In a 12-week clinical study, the appearance of key aging indicators were significantly improved: 23% improvement in plumpness 9% decrease in sagginess 11% improvement in firmness 13% improvement in elasticity 18% improvement in texture