Diazolidinyl urea

Other names: Diazolidinylurea

Harm score: 4 (Slightly harmful chemistry)

Diazolidinyl urea is a chemical that is commonly used as a preservative in cosmetics and skin care. Its purpose is to prevent the growth of bacteria and fungi in products, thereby greatly extending their shelf life. Diazolidinylurea is a colourless solid with a fine crystalline appearance that is water soluble. It should be stressed that although diazolidinyl urea is an effective preservative, it can cause allergic reactions in some users and it is therefore important to always read the product ingredients.

Diazolidinyl urea is widely used in a wide range of cosmetic products. The most common preservatives are found in skin creams, shampoos, conditioners, deodorants, soaps or make-up. Outside the cosmetics industry, diazolidinyl urea is also used in some industrial paints, adhesives and coatings. Although this substance is allowed in cosmetic products, it is important to note that some people may react to diazolidinyl urea with skin irritation or even an allergic reaction. Therefore, people with sensitive skin should be careful when choosing cosmetic products and read their ingredients carefully.