Polyisobutene and Hydrogenated Polyisobutene are polymers. In cosmetics and personal care products, Polyisobutene and Hydrogenated Polyisobutene are used in the formulation of lipsticks, they can also be found in eye and facial makeup, skin care products and suntan products.
- Both Polyisobutene and Hydrogenated Polyisobutene increase the thickness of the lipid (oil) portion of cosmetics and personal care products. Polyisobutene dries to form a thin coating on the skin, hair or nails, and is used to hold together the ingredients of a compressed cake. Hydrogenated Polyisobutene acts as a lubricant on the skin’s surface, which gives the skin a soft and smooth appearance.
Resources
Source: www.cosmeticsinfo.org/ingredient/polyisobutene#sthash.mElJ7biA.dpuf