The first step in the skincare routine, this face serum highly concentrated in Avène Thermal Spring Water, Pro-Vitamin B5 and TRP-Regulin™, restores the skin barrier in 1 day* and strengthens it . The skin's ability for self-restore is restored within 3 weeks. The skin's restorative mechanisms are lastingly restored an it provides immediate and long-lasting relief from tightness and hydrates for 24h.