Xanthan Gum
A fermentation-derived thickener that gives gels, serums and creams their texture and keeps formulas stable.
xanthan gum, xanthan, E415
All skin types
What it does
Xanthan gum is one of the most common ingredients on a skincare label, and one of the least dramatic. It is a thickener and stabiliser: it turns watery formulas into gels and serums with a pleasant slip, helps creams hold together so the oil and water don't separate, and keeps particles such as exfoliating grains evenly suspended. You'll find it in cleansers, serums, creams and masks across the SkincareEdit range.
How it works
Xanthan gum is a polysaccharide, a long chain of sugars, made when the bacterium Xanthomonas campestris ferments a sugar such as glucose. Dissolved in water, even a small amount, usually well under 1%, forms a loose gel network. That network thins as you spread the product and sets again when you stop, which is why a gel can feel rich in the jar yet glide easily over the skin. It has no active role of its own, though it can leave a soft, light film on the surface.
MG says
Xanthan gum is nothing to seek out or avoid. Judge a formula by its actives and by how your skin responds to it: the best product is the one your skin tolerates well and that delivers results, whatever its label.
Cautions
Xanthan gum is very well tolerated and rarely causes reactions. As with any new product, patch test first if your skin is reactive.
