Durably moisturizes very dry skin & immediately brings it comfort.The XEROlys long-lasting emollient treatment is the product that combines high efficiency (10% Urea & 5% NaCl) with maximum ease of use (Oil-in-Water emulsion, fragrance). Body emulsion. The URODIUM contained in XEROlys is a patented active ingredient, developed by LYSASKIN research, which improves the moisturizing power of Urea (hydration factor naturally present in the skin) dosed at 10% & especially its persistence ( very long-lasting action).