Kiehl’s Since 1851 Vital Skin-Strengthening Hyaluronic Acid Super Serum 1.7 oz.

What It Is: A hyaluronic acid serum that strengthens skin while defending against skin-aging stressors for youthful, radiant skin. These stressors include Uv exposure, pollution and extreme temperatures, which can cause dullness, dehydration, fine lines and other signs of aging. Key Ingredients: – Hyaluronic acid helps smooth and plump fine lines and is commonly used in skincare products to boost hydration and visibly refine skin’s texture. The smallest molecular size of hyaluronic acid, 11kDa,