Hydrogenated Polyisobutene

Hydrogenated polyisobutene is a saturated, lightweight synthetic hydrocarbon polymer that works as a non-greasy emollient and film former. It adds glide and shine, reduces tack, and improves texture and wear.
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Ingredient Snapshot

Overview
A lightweight synthetic emollient that adds shine and seals in moisture.
Category
Barrier Support, Skin Conditioning
Type
Emollient

Ingredient Ratings

Overall Rating

Great

Comedogenic Risk

None

Skin Benefits

Delivers a light, silky feel while helping seal in moisture without a greasy aftertouch. Creates a soft, cushioned finish that improves comfort on skin and lips.

Uses In Skincare & Cosmetics

Common in lip oils, lightweight moisturizers, and long-wear foundations to promote smooth application and a comfortable, dry-touch finish.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally low irritation and sensitization potential. Patch test if you're very sensitive, but it is widely tolerated and not known for regulatory restrictions.

Is Hydrogenated Polyisobutene a Good Ingredient?

It rates Great because it's a highly stable, inert film-forming emollient that resists oxidation and typically shows very low irritation, supporting comfortable wear and barrier support. Its long track record and favorable safety reviews across a wide range of formulas are what back up the top rating.