INCI · other · CIR review pending · used in 1 products
Polybutene
Polybutene is a synthetic polymer formed by the polymerization of a mixture of iso- and normal butenes. It is listed under CAS numbers 9003-28-5 and 9003-29-6. According to CosIng, its official functions are binding and viscosity controlling. It is commonly found in lip gloss, lip oil, and lip balm formulations.
Evidence level
weakEWG score
—Comedogenic
—Category
other● Benefits
Polybutene primarily serves as a viscosity controller and binding agent in cosmetic formulations, contributing to the texture and consistency of products. Its widespread use in lip glosses suggests it helps provide the characteristic thick, glossy texture of such products.
viscosity controlling
● Cautions
