Cited skincare — every flag names its source, no upsell.
Di

Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer

Dimethicone/Bis-Isobutyl PPG-20 CrosspolymerBarrier

A silicone that forms a flexible film — softens the look of fine texture, adds silky slip, helps a product wear evenly.

What it does

It leaves a smooth, flexible film that softens the look of fine texture, adds silky slip and helps a product wear evenly. It’s a silicone. It’s there for texture, not to change your skin.

The evidence, graded

expert consensusUS safety reviewers (2014) assessed 62 dimethicone crosspolymers, which products use mostly to absorb oil, add body, form a film, soften skin, add slip and thicken. Their index lists dimethicone crosspolymer, dimethicone/vinyl dimethicone crosspolymer, dimethicone/bis-isobutyl PPG-20 crosspolymer and vinyl dimethicone/methicone silsesquioxane crosspolymer under it. Its conclusion names dimethicone/PEG-10/15 and PEG-12 dimethicone/PPG-20 crosspolymer. They judged all 62 safe as used.Becker 2014 · International Journal of Toxicology ↗

Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.

Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.

This page is public so a shared ingredient card always has its sources behind it — and so you can check them without an account.
Want more like this?
Every evidence-based flag cites its source, Drop tells you when your routine is complete, and it helps you simplify — instead of selling you more. The app launches on iOS and Android in October 2026. Rate my routine works today at /rate — no sign-in.