Humectant

A humectant is a moisture-binding ingredient that draws water from the environment and deeper layers of the skin into the outermost layer (stratum corneum), helping to maintain optimal hydration levels. Humectants are essential for hydrating dry or dehydrated skin, improving elasticity, and enhancing the overall appearance of smooth, plump, and healthy-looking skin. In hair care, humectants help to retain moisture within the hair fiber, improving softness and reducing brittleness. Common humectants include glycerin, hyaluronic acid, propanediol, and sodium PCA all widely used in serums, moisturizers, conditioners, and masks. Their ability to deliver immediate and lasting hydration makes them a core component in both skincare and haircare formulations.