Carbomer

Benefits

Moisturizing

What is Carbomer?

Carbomer consists of cross-linked polyacrylic acid polymers derived from acrylic acid monomers through polymerization processes. These high-molecular-weight, hydrophilic substances are widely employed in cosmetics, particularly in gels, lotions, creams, and serums at concentrations typically around 0.1-1%. In formulations, carbomer particles disperse in water to form a pre-gel, then upon neutralization with a base like triethanolamine or sodium hydroxide, they ionize, repel each other, and swell dramatically—up to 1000 times their original volume—creating a transparent, viscous gel network. This mechanism enhances product texture, suspends active ingredients evenly, prevents separation in emulsions, and improves spreadability, making it ideal for water-based and opaque systems across cleansers, moisturizers, and sunscreens.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 1 View on EWG →

PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Emulsion stabilizer

Improves emulsion robustness by preventing droplet coalescence and phase separation, often by thickening, structuring, or strengthening the interfacial layer.

Viscosity controlling agent

Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Gel forming

Builds a gel network to increase viscosity and structure, improving suspension, spread, and stability in serums, gels, and some emulsions.

Benefits

Enhances moisturizing sensation through gel-like hydration retention.

Stabilizes emulsions to maintain product integrity and even distribution.

Improves viscosity for luxurious texture and precise application.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit	Who Should Avoid
Individuals seeking stable, gel-based moisturizers for daily use.	Users with known allergies to acrylic polymers.
People preferring non-greasy, spreadable formulations in serums or lotions.	People experiencing irritation from high-viscosity leave-on products.
Those with normal to dry skin wanting improved product suspension.	Individuals sensitive to neutralized pH shifts in formulations.

Safety Notes

Rated low hazard by authoritative cosmetic safety reviews.
Generally well-tolerated in rinse-off and leave-on products.

Frequently Asked Questions about Carbomer

What makes carbomer effective in skincare?

It swells in water after neutralization to form stable gels, improving texture and ingredient suspension.

Is carbomer safe for sensitive skin?

Authoritative reviews confirm low irritation risk in typical cosmetic use.

Does carbomer affect product absorption?

Its gel structure aids even spreading without hindering active ingredient delivery.