Polybutene
Ingredient Info
Polybutene is a synthetic polymer derived from petroleum that acts as a thickener, binder, and emollient in skincare products. It helps create a smooth texture and forms a protective layer on the skin without dissolving in water.
Benefits
- Improves product texture and spreadability
- Creates a protective, conditioning layer on skin
- Helps bind ingredients together in formulations
Science: The Cosmetic Ingredient Review Expert Panel concluded that Polyisobutene and Hydrogenated Polyisobutene are safe as used in cosmetics based on extensive toxicity testing, including 2-year chronic studies, reproductive studies, and clinical patch tests showing no dermal irritation, sensitization, or ocular irritation. The ingredient's extremely low water solubility and high oil-water partition coefficient indicate minimal skin absorption and systemic exposure.
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