Snapshot
- Overview
- A glossy, cushiony ingredient that seals in moisture and shine.
- Category
- Hydration, Barrier Support, Skin Conditioning, Tone/Texture
- Type
- Film Former
Polyisobutene
Polyisobutene is a synthetic hydrocarbon polymer available in varying molecular weights. In skincare and makeup it forms a flexible, glossy film that adds slip, cushion, and an occlusive feel, leaving texture smoother and the finish more conditioned.
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Our take
Is Polyisobutene a Good Ingredient?
Rated Good because it is a stable, inert film former/emollient that boosts slip and occlusion for smoother texture and conditioning feel. Benefits are mainly sensorial and barrier-feel rather than active treatment effects.
What it does
Skin Benefits
Seals in moisture to minimize water loss, leaving skin and lips feeling plush with a soft shine.
Where you'll find it
Uses in Skincare & Cosmetics
Used in lip glosses, balms, and makeup primers, as well as rich creams, to boost slip and payoff.
Before you use it
Safety
Generally viewed as non-irritating and non-sensitizing. Its occlusive nature may feel heavy for some or be less suitable for those who prefer very breathable textures. No common regulatory restrictions noted.
Products with Polyisobutene
