Carbomers are thickening agents that control the viscosity and flow of cosmetic. Additionally, carbomer can be used to distribute or suspend an insoluble solid in a liquid.

Moreover, they are used to keep emulsions from separating into their oil and liquid components. They are also emulsion stabilizers in oils and petroleum products. They have the ability to absorb and retain water and can swell up to 1000 times their original volume when dispersed in water.