Xanthan gum, discovered in the 1960s, is a natural polysaccharide produced through fermentation by the bacterium Xanthomonas campestris. Its unique molecular structure gives it exceptional thickening and stabilizing properties, making it a valuable ingredient in various industries, including cosmetics and skincare [1].

In skincare formulations, xanthan gum serves multiple purposes. Primarily, it acts as a rheology modifier, improving the texture and stability of products. This property ensures that creams and lotions maintain their consistency and don't separate over time. Additionally, xanthan gum forms a thin, gel-like film on the skin's surface, which helps to reduce transepidermal water loss (TEWL) and improve skin hydration [2].

Clinical studies have demonstrated the moisturizing effects of xanthan gum. A study published in the International Journal of Cosmetic Science found that formulations containing xanthan gum significantly improved skin hydration and reduced TEWL compared to control formulations [3]. This moisture-retaining ability makes xanthan gum particularly beneficial in products designed for dry or sensitive skin.

Furthermore, xanthan gum's ability to create a uniform and stable emulsion helps in the even distribution of active ingredients throughout a product. This ensures that beneficial components are delivered consistently to the skin, potentially enhancing their efficacy [4].