Vichy Mineral 89 Hyaluronic Acid Booster is a 11 ingredient formula suitable for sensitive skin that acts as a protective shield against pollution. A fresh, gel-like texture that absorbs into skin, drenching with moisture. Hydrating serum enriched with Vichys highest concentration of 89% Vichy Thermal Mineralizing Water with Hyaluronic Acid, the gel serum plumps skin and strengthens the skin barrier to protect from the impact of daily aggressors such as pollution. The perfect first step in every skin care routine for up to 24-hour hydration. Hypoallergenic. Tested with 175 dermatologists on 1500 women.