Products with Polyisobutene

Polyisobutene is an emollient and thickener that adds body and a smooth, cushiony feel to formulas. It helps improve texture and wear and can give products a fuller, more substantial finish on the skin.

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Polyisobutene and How Long a Formula Stays Put

This is a texture ingredient with a practical side effect. Polyisobutene is a synthetic emollient polymer that thickens a formula and forms a flexible, cohesive layer, which is part of how a sunscreen holds up to humidity and how a treatment serum stays in place under makeup.

Alastin uses it across its TriHex line: Restorative Skin Complex, Ultra Nourishing Moisturizer, Ultra Light Moisturizer and Restorative Neck Complex all contain it. EltaMD relies on it in UV Clear SPF 46 and UV Clear Tinted SPF 46.

Is polyisobutene heavy on the skin?

The amount used decides that. Alastin's Ultra Light Moisturizer and Ultra Nourishing Moisturizer both contain it and sit at opposite ends of the weight scale — a useful reminder that an ingredient list tells you less than a texture test.

How to shop at ELLEMES

Both brands here are ones we are authorized to sell, and samples of the Alastin moisturizers are usually available at the desk.

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Featured Products with Polyisobutene Reviews

EltaMD UV Clear Broad-Spectrum SPF 46
EltaMD UV Clear Broad-Spectrum SPF 46
4.8 (45 reviews) 4.8 out of 5 stars based on 45 reviews
$45.00
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Featured review

“This has been such a great experience using this everyday. It is easy to apply and doesn’t leave a white cast to my face. Also knowing that it is helping keep my acne down makes me...”

— Orina B.
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EltaMD UV Clear Tinted Broad-Spectrum SPF 46
EltaMD UV Clear Tinted Broad-Spectrum SPF 46
4.8 (37 reviews) 4.8 out of 5 stars based on 37 reviews
$47.00
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“Best coverage and no smell. Great on my skin!”

— Caila
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Alastin Skincare Restorative Skin Complex
Alastin Skincare Restorative Skin Complex
4.7 (54 reviews) 4.7 out of 5 stars based on 54 reviews
$239.00
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Featured review

“I started using Alastin a couple of years ago. My dermatologist asked me to “just try it” for a couple of months. To my surprise it didn’t take a couple of months. I started seeing subtle...”

— Victoria G.
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