Hyaluronic acid can be classified as a humectant rather than an occlusive. As a humectant, it plays a crucial role in moisturizing dry skin by attracting and retaining moisture not only from the environment but also from the deeper layers of the skin. This action helps to keep the skin hydrated and supple. Notably, hyaluronic acid is often found in moisturizers designed to deeply hydrate and add a plumping effect to the skin