Hyaluronic acid is a humectant, which means that it draws water into the outside and plumps it with hydration. “Think of the skin as an actual sponge,” says board-certified dermatologist Ava Shamban, M.D., founding father of SKINFIVE, in regards to the component class. “When it is dry, it is thin, brittle, not pliable, rough in texture, dull, and sallow in color. Run it under water, and it is instantly plump, dense, and smooth. Even the color is brighter.”
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