Vichy Mineral 89 Skin Serum is formulated to strengthen the skin barrier and increase hydration. Utilizing the power of volcanic mineralizing water and Hyaluronic Acid, this serum acts as a daily booster to make skin more resilient against environmental aggressors. This lightweight, fast-absorbing formula is suitable for daily use, morning and evening, before your regular skincare routine. It provides a base layer of intense moisture, leaving the complexion looking plumper, smoother, and radiant. It is designed to be suitable for all skin types, including sensitive skin.