Vichy’s Aqualia Rehydrating Serum is inspired by this rehydration process with a formula of 97% natural origin. The formula is enriched with mineral salts known to lock in moisture, and naturally sourced Hyaluronic Acid. Plant sugar mannose in the formula, additionally is known to help reduce moisture loss. Suitable for sensitive skin, the skin is left feeling dewy, fresh and hydrated for up to 48 hours.