What each key ingredient does Hyaluronic Acid is extremely moisturizing. It replenishes skin hydration levels, helping to smooth and soften the appearance of fine lines. Vitamin C is an antioxidant that enhances the skin's brightness. Tripeptide-31 is a peptide that improves the look of skin texture and tone, promoting a firmer and more elastic appearance. Enhance your youthful appearance with YEOUTH Hyaluronic Acid Serum for Face with Vitamin C. This hydrating serum is designed to brighten and improve the look and feel of your skin. Made with a blend of Hyaluronic Acid, Vitamin C, and Tripeptide-31, it helps make your skin appear tighter and more radiant. Face serum for dry skin and all other skin types, including sensitive skin, this face serum can be used alone or in combination with other serums. This trio of powerful ingredients works together to deliver a more energized and vibrant complexion, leaving the skin looking smoother, firmer, and more youthful.