Cetaphil Optimal Hydration 48Hr Activation Moisturizing Facial Serum is a skin moisturizing serum designed to provide intense and long-lasting hydration to the skin. The serum contains a blend of moisturizing factors, including sunflower seed oil, niacinamide, hyaluronic acid, and panthenol, which work together to improve skin hydration and help restore the skin's natural moisture barrier. Hyaluronic acid is a naturally occurring substance in the skin that helps to retain moisture, while niacinamide may help calm your skin, reduce trans epidermal water loss (TEWL), and increase moisture in your skin's uppermost layer. This makes niacinamide a helpful skincare ingredient for those looking to promote hydrated, even-toned skin. Sunflower seed oil keeps your skin moisturized and wrinkle-free. Pro-vitamin B5 protects the skin's barrier and helps the skin to retain its moisture levels and shield it from irritation. By applying this serum with pro-vitamin B5, you will maximize your skin's hydration while improving its softness and elasticity. Vitamin E is an antioxidant that helps to protect the skin from damage caused by environmental stressors. The serum is formulated to provide 48-hour hydration, making it ideal for those with dry or dehydrated skin. It is also lightweight and fast absorbing, making it easy to incorporate into your daily skincare routine. The serum is free from parabens & fragrances, making it suitable for those with sensitive skin.