Butylene glycol is a chemical ingredient used in various self-care products such as shampoo, conditioner, lotion, anti-aging and hydrating serums, sheet masks, cosmetics, and sunscreen. It is a type of organic alcohol derived from distilled corn, petroleum, and sugarcane. Butylene glycol is included in formulas for these types of products because it adds moisture and conditions hair and skin. It also works as a solvent, meaning it keeps other ingredients, dyes, and pigments from clumping up inside of a solution. Some of the benefits of butylene glycol include:
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Moisturizing: Butylene glycol draws moisture to the skin and hair, and it also coats the skins surface, creating a barrier that prevents water loss.
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Texture-enhancing: Butylene glycol acts as a solvent, helping ingredients stay suspended in formulas, preventing them from clumping together or becoming gritty. It also reduces the products viscosity, stopping other ingredients from sticking together, and maintains the smooth consistency of products so that a person can effortlessly and evenly apply them to their bodies.
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Stabilizing: Butylene glycol acts as a stabilizer, preventing active ingredients and volatile compounds from breaking down over time.
However, some people may experience skin, eye, or lung irritation from using products containing butylene glycol. Additionally, there are data gaps and concerns about the maximum reported "as used" concentration of butylene glycol in products. It is important to speak with a doctor if you have concerns about using products containing butylene glycol, especially during pregnancy.