Butylene Glycol

Butylene glycol is a commonly used ingredient that plays multiple roles in cosmetics, including as a humectant, texture enhancer, solvent, and penetration booster. Research indicates butylene glycol not only helps raise water content in skin but may also contribute to decreasing roughness on the surface of skin. Not generally promoted as a  preservative, some of its properties can help boost a formula’s stability against microorganisms that may harm skin’s surface. It is a clear and viscous liquid,  similar to propylene glycol but with a lighter texture