Hyaluronic acid (HA) is a hygroscopic molecule capable of holding up to 1000 times its weight in water, making it a top moisturizing agent for the skin and hair. When Hyaluronic Acid, composed of D-glucuronic acid and D-N-acetylglucosamine units, is applied directly to the skin, it contributes to effective protection against dehydration.
Hyaluronic acid can also be broken down into smaller molecules, capable of penetrating the skin and mimicking biological hydration through their own activity, but mainly by stimulating the synthesis of natural hyaluronic acid by keratinocytes.
At the same time, because hair needs hydration just like our skin, hyaluronic acid is the ultimate ally in replenishing their moisture.