Carbomer

Carbomer is a polymer of acrylic acid, which reveals fantastic versatility in converting liquids into smooth, stable gels. This renders Carbomer very useful as a thickening agent in many cosmetic formulations that go from creams and lotions to serums and gels. In any formulation, neutralization of Carbomer with a base, such as sodium hydroxide or triethanolamine, must be carried out. The neutralization method makes the polymer chains swell and interpenetrate, developing a clear, viscous gel with a pleasant non-sticky feel.
Considering its use as a thickener, the fact that Carbomer is made up of long chains of repeating units explains its ability to absorb vast amounts of water. This property allows Carbomer to form a gel matrix that has been used to stabilize emulsions-that is, the separation of the phases of oil and water in cosmetic products. Besides, Carbomer is usually used in low concentrations, typically around 1% or even less, which allows formulators to achieve the required viscosity with no great change in the overall formulation.
Moreover, Carbomer is valued for its excellent compatibility with a wide range of active ingredients and cosmetic agents, such as humectants, emollients, and preservatives, which has made it very popular in enhancing skincare product performance and aesthetic appeal. Its ability to impart a smooth, rich feel upon application contributes to a pleasant user experience. Moreover, Carbomer is generally regarded as safe for use in cosmetic products. Its long history of application and extensive safety assessments support its inclusion in formulations. Overall, Carbomer represents one of the most important ingredients used in the formulation of skincare products that are effective, yet pleasing to the consumer, by ensuring stability, texture, and functionality.