Hydrogenated Polyisobutene
Synthetic emollient that replaces mineral oil and squalane. Provides light slip, a thin flexible film and water-resistance for color cosmetics.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Oily, Combination, Sensitive
About this ingredient
Hydrogenated Polyisobutene is a synthetic liquid hydrocarbon, isobutylene polymer that has been hydrogenated. Transparent oily liquid, chemically inert. Where applied. Substitute for mineral oil and squalane in creams, lotions, lipsticks, mascaras. Provides light slip, a thin flexible film, and water resistance for color cosmetics. Often used in long-wear lipsticks, lip tints, water-resistant sunscreens, stretch mark products. In Spain in Bioderma Sensibio Light, Sesderma Acglicolic, Isdin water-resistant sunscreens. Safety. CIR rated hydrogenated polyisobutene safe at current cosmetic concentrations (2009, re-evaluated 2018). Non-irritating, non-sensitizing, non-comedogenic. Pregnancy and lactation – safe topically. Suitable for all skin types. In some patients with very sensitive skin synthetic hydrocarbons produce a "greenhouse" effect from pronounced occlusion – prefer more "breathable" emollients then (squalane, esters).
Frequently asked questions
Is Hydrogenated Polyisobutene safe during pregnancy?
Hydrogenated Polyisobutene is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Hydrogenated Polyisobutene for?
Hydrogenated Polyisobutene suits: normal, dry, oily, combination, sensitive.
What is Hydrogenated Polyisobutene and what does it do in cosmetics?
Synthetic emollient that replaces mineral oil and squalane.
What's the INCI name for Hydrogenated Polyisobutene?
The INCI name is Hydrogenated Polyisobutene.
See Hydrogenated Polyisobutene in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Similar role in the formula
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