5-Ureidohydantoin (allantoin) ek natural ingredient hai jo skincare mein use hota hai. Iska main kaam hai skin ko soothe karna, moisture dena, aur ek thoda sa keratolytic effect dena. Ye skin ko smooth banane mein madad karta hai aur skin barrier ko repair karne mein bhi helpful hai. Ye sabke liye safe aur gentle ingredient maana jata hai, isliye sensitive skin waalon ke liye bhi theek hai.