KEMAT polybutene is used in the formulation of eye makeup, lipstick and skin care products because it is a pure and clear, non-drying, sticky liquid, light in colour. It is safe for use in skin applications, it is non-skin irritating, non-drying and hydrophobic. It is also non-comedogenic (prevents blocked pores) and non-toxic.
Polyisobutene dries to form a thin coating on the skin 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.
In cosmetics and personal care products PIB functions as a:
- binder: to hold together the ingredients of a compressed cake or tablet.
- epilating agent: to be heated, applied to the skin and stripped off quickly to remove unwanted hair.
- viscosity increasing agent (non-aqueous): to increase the thickness of the oil portion of cosmetic products.
End User Applications
Eyes – mascara
Properties – tacky, thickener, waterproof
Lips – lipstick, lip gloss, lip liner, lip balm
Properties – tacky, thickener, gloss, shine enhancer
Creams, lotions – emollient, non-comedogenic, no oily feel
Night moisturisers – hydrophobic, moisturising
Sunscreens – hydrophobic, waterproof, anti UV performance
Hair care – mousse, gel
Properties – tacky, thickener, gloss and spreadability