Beautiful Hair with Hyaluronic Acid & Botanicals. Healthy, Shiny Hair. Hyaluronic acid is a humectant, which means it pulls in water from the atmosphere and helps retain that moisture. When applied to hair, hyaluronic acid reduces dryness and brittleness, drastically reduces frizz and fly aways, and makes hair shinier, softer, and healthier. Hyaluronic acid is great for your scalp too, it can help "moisturize dry, flaky scalps and help promote a healthy environment for hair." Use on wet or dry hair. Safe for color treated hair. 4oz