Help rehydrate skin and boost skin's moisture levels by keeping skin healthy and hydrated with Timeless Skin Care Hyaluronic Acid Serum 100 percent Pure. Hyaluronic Acid can hold up to 1000 times its weight in water, making it the number one, go-to ingredient for hydration. This serum contains 1 percent pure Hyaluronic acid, the highest concentration in maintaining the skin’s moisture. It is suitable for all skin types. Size: 2 oz. Uses: Apply 2-3 drops on clean skin or combine with your favorite cream/moisturizer to enhance benefits. Use two times a day, morning and night.