ISDINCEUTICS Flavo-C Ultraglycan from Isdin is an antioxidant serum designed for daytime use, enriched with vitamin C to help safeguard the skin from free radical damage. This formulation stimulates collagen production, enhancing the skin's radiance. The unique blend of proteoglycans and pre-proteoglycans ensures optimal hydration and reinforces the skin's structural support. For best results, apply the serum to clean, dry skin in the morning, steering clear of the eye region.