Carbomer[1][2][4] ●
TL;DR. This ingredient is a rheology modifier and gel-forming thickener that builds viscosity, suspends particles, and stabilizes emulsions in water-based formulas.
What does Carbomer[1][2][4] do in a cosmetic formula?
This ingredient is a rheology modifier and gel-forming thickener that builds viscosity, suspends particles, and stabilizes emulsions in water-based formulas.
Is Carbomer[1][2][4] clean?
From a clean-beauty lens, this ingredient is usually low concern for skin tolerance because its large polymer size limits penetration and irritation is uncommon. The friction is mainly its fully synthetic origin and non-biodegradable polymer profile, and stricter natural standards do not permit it.
Is Carbomer[1][2][4] sustainable?
It is typically made from petrochemical feedstocks and is not considered readily biodegradable. Use levels are low, but its polymeric persistence creates environmental scrutiny in wastewater and rinse-off formats.
Is Carbomer[1][2][4] COSMOS-approved?
It is not permitted under COSMOS natural or organic standards because it is a synthetic, non-natural polymer. Its fit with Green Chemistry is weak on renewable sourcing and biodegradability, although it is effective at very low concentrations.
How does Carbomer[1][2][4] work chemically?
The molecule is a very high molecular weight, lightly crosslinked, carboxyl-rich anionic polymer that swells in water and builds viscosity after neutralization. It is commonly used around 0.1% to 1%, works best near neutral pH, and can lose viscosity with high electrolyte loads or very acidic systems.
Last updated 2026-05-15