Ingredients of natural and synthetic origin with high solubility that exhibit thickening properties in the presence of water. They have pseudoplastic, viscoelastic, and sometimes thixotropic behavior. They are used as stabilizers and thickeners in cosmetic products. These ingredients improve the texture of formulations, offering great stability and a pleasant sensory profile. In general, they have thickening, film-forming, and texturizing properties, with an emollient effect that adds softness. They are used in skincare, makeup, and hair care formulations.