Hyaluronic Acid(HA) is an important element of skin known for its ability to bind up to 1000 times its weight in water. The bodys HA production naturally decreases with age, leaving the skin dry and wrinkled. Replenishing the bodys natural HA allows skin to retain moisture and provides volume, form and lift. Episilk PHA Serum is an intensely hydrating serum that rejuvenates skin from the inside out. It improves the tone and appearance of skin by enhancing the skins ability to retain moisture. Its light, non-oily texture soothes skin leaving it fresh and soft while smoothing fine lines and wrinkles. PHA Serum renews your skins suppleness and elasticity. Apply twice a day to wet face or put a small amount on the back or side of your hand, and mix with an equal amount of water. These serums are very concentrated and adding a very small amount of water will help activate them for best results. Apply to the areas you desire to see results according to the serum you choose!