Xanthan Gum

What is Xanthan Gum?

Xanthan gum is a high-molecular-weight polysaccharide produced through the aerobic fermentation of sugars by the bacterium Xanthomonas campestris. This natural biopolymer forms a versatile gel-like structure in water, making it ideal for cosmetics like lotions, creams, serums, and cleansers. In formulations, it functions by increasing viscosity to prevent ingredient separation, suspending particles evenly, and creating smooth, spreadable textures. Its pseudoplastic rheology allows easy application that thins under shear for comfortable use. Derived biotechnologically, it offers clarity and stability across pH ranges, enhancing product shelf life without altering sensory feel. Commonly found in natural and organic skincare, it supports clean-label claims due to its renewable sourcing and biodegradability.

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:

Binder
Helps hold solid ingredients together to form cohesive tablets, compacts, or sticks, improving pressability, integrity, and wear of the finished product.
Emulsion stabilizer
Improves emulsion robustness by preventing droplet coalescence and phase separation, often by thickening, structuring, or strengthening the interfacial layer.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Binding
Provides cohesion by helping ingredients stick together, improving the strength and integrity of pressed powders, tablets, or solid bars.
Gel forming
Builds a gel network to increase viscosity and structure, improving suspension, spread, and stability in serums, gels, and some emulsions.

Benefits

Enhances product texture for smooth, even application.

Stabilizes emulsions to maintain consistent formula performance.

Provides gentle thickening suitable for sensitive formulations.

Who It's For

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

Who May Benefit Who Should Avoid
People with all skin types seeking stable, natural-textured products.
Those with rare xanthan gum allergies from food sensitivities.
Individuals preferring biotech-derived, clean-label ingredients.
People experiencing issues with fermented polysaccharides.
Users of gels, serums, and lotions for improved spreadability.
Individuals sensitive to bacterial-derived thickeners.

Safety Notes

  • Rated low hazard by safety assessments for cosmetic use.
  • Minimal irritation potential in rinse-off and leave-on products.

Frequently Asked Questions about Xanthan Gum

What is xanthan gum made from?

It is produced by fermenting sugars with Xanthomonas campestris bacteria, yielding a natural polysaccharide.

Is xanthan gum safe for sensitive skin?

Yes, it has a low irritation rating and is suitable for sensitive skin in cosmetics.

Does xanthan gum clog pores?

No, it has a comedogenic rating of 0, making it non-pore-clogging.