Carbomer

OKthickener

Thickener and gelling agent used to create stable emulsions and gels.

What does Carbomer do for skin?

Carbomer is a synthetic polyacrylate polymer that functions primarily as a rheology modifier, gelling agent, and emulsion stabilizer in cosmetic formulations. Upon neutralization in aqueous solutions, the carboxylic acid groups along the polymer chains ionize, leading to electrostatic repulsion. This causes the coiled polymer chains to swell and uncoil, significantly increasing the viscosity of the solution and forming a stable gel network. It does not exert direct dermatological mechanisms on the skin but rather structures the vehicle for other active ingredients.

Typical concentration: 0.1-2.0% (most commonly 0.2-0.5% for gelling and viscosity modification)

Is Carbomer safe?

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed carbomers and found them safe as cosmetic ingredients. They are generally considered non-irritating and non-sensitizing, even at concentrations significantly higher than typically used in formulations.

What does the research say about Carbomer?

Regulatory Info

Status: Approved
Restrictions: 2-Propenoic acid, polymer with 2,2-bis(hydroxymethyl)propane-1,3-diol 2-propenyl ether
All Ingredients

Frequently Asked Questions

What does Carbomer do in skincare?+

Thickener and gelling agent used to create stable emulsions and gels. Carbomer is a synthetic polyacrylate polymer that functions primarily as a rheology modifier, gelling agent, and emulsion stabilizer in cosmetic formulations. Upon neutralization in aqueous solutions, the carboxylic acid groups along the polymer chains ionize, leading to electrostatic repulsion. This causes the coiled polymer chains to swell and uncoil, significantly increasing the viscosity of the solution and forming a stable gel network. It does not exert direct dermatological mechanisms on the skin but rather structures the vehicle for other active ingredients.

Is Carbomer safe for sensitive skin?+

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed carbomers and found them safe as cosmetic ingredients. They are generally considered non-irritating and non-sensitizing, even at concentrations significantly higher than typically used in formulations.

What percentage of Carbomer should I look for?+

Look for products with 0.1-2.0% (most commonly 0.2-0.5% for gelling and viscosity modification) for clinical efficacy.

Further Reading