Gellan Gum

What is Gellan Gum?

Gellan gum is a high-molecular-weight polysaccharide produced through fermentation by the bacterium Sphingomonas elodea. This anionic, deacetylated exocellular polymer forms clear, brittle gels in the presence of cations like calcium or magnesium, making it ideal for aqueous cosmetic formulations. Commonly found in skincare products such as serums, masks, eye gels, and lotions, it serves primarily in water-based systems. It functions by creating thermoreversible gels that set at room temperature, enhancing product structure without heat. As an emulsion stabilizer, it prevents phase separation by increasing viscosity and strengthening interfacial layers. Its viscosity controlling properties allow precise texture adjustment for better spreadability and suspension of actives. Additionally, it acts as a film former, depositing a flexible layer to improve product adherence and water resistance on skin or hair.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

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.
Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.

Benefits

Stabilizes emulsions to maintain product consistency over time.

Controls viscosity for luxurious, easy-to-apply textures.

Forms lightweight films to enhance product performance without greasiness.

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 sensitive skin seeking gentle, non-irritating thickeners.
Those with rare allergies to microbial polysaccharides.
Users preferring clear gel-based formulas in serums and masks.
People sensitive to fermented ingredients, though uncommon.
Individuals wanting stable, natural-identical stabilizers in daily skincare.
Individuals preferring strictly plant-derived gelling agents.

Safety Notes

  • Considered safe for cosmetic use by regulatory reviews like CIR.
  • Low hazard rating from EWG, suitable for broad application.

Frequently Asked Questions about Gellan Gum

What is gellan gum derived from?

It comes from fermentation by the bacterium Sphingomonas elodea, yielding a natural polysaccharide.

Is gellan gum safe for sensitive skin?

Yes, it carries a low hazard rating and is generally non-irritating based on safety assessments.

Does gellan gum cause breakouts?

No, with a comedogenic rating of 0, it does not clog pores.