Flip over almost any serum, moisturiser or cleanser in your bathroom cabinet and you will likely spot it near the bottom of the ingredient list: xanthan gum. While the name sounds like a harsh industrial chemical, it is actually one of the gentlest, most reliable, and thoroughly researched ingredients in modern cosmetic chemistry — a quiet workhorse that gives the products you love their silky texture and stability.
Here is a look at what xanthan gum is, why it is essential for your skin, and where to find it across the REFORM Skincare UK product range.
Key Benefits for Your Skin and Routine
Although xanthan gum is not a traditional "active" like vitamin C or retinol — meaning it won't single-handedly resurface your complexion — its structural benefits are vital to how well your products perform.
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Delivers Active Ingredients Evenly: By keeping insoluble particles suspended and formulas homogeneous, xanthan gum ensures active ingredients reach your skin evenly rather than pooling in one part of the tube.
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Stabilises and Protects Formulas: It prevents oil-and-water emulsions from separating across varying temperatures and pH levels. This ensures your moisturiser maintains the same consistency from the first pump to the last.
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Enhances Texture and Application: Thanks to its shear-thinning properties, it forms a stable gel network at rest that thins out when rubbed into the skin. This allows serums to glide effortlessly and creams to spread smoothly without feeling greasy.
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Supports Skin Hydration: As a humectant-adjacent ingredient, it creates a light, breathable film on the skin’s surface that helps trap moisture and slow down water evaporation.
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Exceptionally Safe and Gentle: Rated with the lowest possible hazard score (1) by the EWG, xanthan gum is non-irritating, non-comedogenic, and non-sensitising. It is ideally suited for sensitive, atopic, or compromised skin types.
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Naturally Derived and Biodegradable: Formed through plant-sugar fermentation rather than synthetic polymers, it breaks down naturally in the environment — making it a staple for clean, conscious beauty.
Good to Know: Because it is a sugar-based polysaccharide, people occasionally worry it might feel sticky or "pill" under makeup. However, because cosmetics use tiny concentrations (typically 0.1–2%), pilling is extremely rare. It appears near the end of the INCI list precisely because a little goes a long way.
What Is Xanthan Gum?
Xanthan gum is a natural polysaccharide (a long chain of sugar molecules) created by fermenting glucose or sucrose with the bacterium Xanthomonas campestris — a process similar to how yoghurt and miso are made. The bacteria secrete a gel-like substance, which is then purified, dried, and milled into a fine powder.
First discovered in the 1950s by USDA researchers searching for a dependable thickener, it has become a staple across food and beauty industries alike. In cosmetics, the INCI categorises xanthan gum as a binding agent, emulsion stabiliser, viscosity controller, and skin-conditioning agent. Put simply: it keeps water-based formulas thick, holds oil and water together, and ensures everything stays smoothly blended.
REFORM Skincare Products Featuring Xanthan Gum
REFORM Skincare lists xanthan gum transparently across its UK range as a trusted texture enhancer and stabiliser. You can find it in the following formulations:
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Gentle Hydrating Crème Cleanser: A dermatologist-recommended cleanser for dry, sensitive, and rosacea-prone skin. Enriched with Sweet Almond Oil, Niacinamide, and Vitamin E, xanthan gum provides the rich texture needed to cleanse effectively without stripping moisture.
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Intensive Moisturiser: Designed for active hydration and barrier support with niacinamide. Xanthan gum works alongside ammonium acryloyldimethyltaurate/VP copolymer to deliver a lightweight, silky gel-cream finish.
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Skin Barrier Repair Cream: A rich emollient cream for compromised, rough, or flaky skin. Formulated with Urea, Lactic Acid, Vitamin E, Olus Oil, and 2% Pro-Vitamin B5, xanthan gum acts as the central thickener to keep the emollient blend stable.
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Glycolic Acid Foaming Cleanser / Glycolic Acid Wash: An exfoliating wash featuring mandelic and glycolic acids alongside soothing allantoin and resveratrol. Xanthan gum provides the necessary body and viscosity for controlled application.
Note: Formulations may be updated over time. For the most up-to-date breakdown on any specific product, always refer to the ingredient list printed on the individual product page before purchasing.
Xanthan gum might work behind the scenes, but it plays a crucial role in your daily routine. It won't transform your skin on its own — but it ensures that the ingredients that do (like your niacinamide, panthenol, and glycolic acid) arrive on your face evenly, comfortably, and effectively every single time.
