A Humectant is a hygroscopic (water-attracting) substance used to keep things moist.
It works by drawing water vapor from the air or pulling moisture from deeper layers of the skin, binding it to prevent moisture loss.
They are found in moisturizers and serums to hydrate the skin and reduce frizz in hair.
A moisturizer is a cosmetic reparation applied to the skin to prevent or relieve dryness, restore hydration, and repair the skin's natural barrier. It works by softening the outer layer of the skin and sealing it to lock in existing moisture.
