Alumina yani aluminum oxide ek bahut hi fine aur hard mineral powder hai jo skincare mein use hota hai. Isse physical exfoliation ke liye microdermabrasion products mein daala jata hai. Yeh bulking agent, opacifying agent, aur anticaking agent ke taur pe bhi kaam karta hai formulations mein. Yeh bahut inert hota hai aur dead skin cells ko remove karne mein helpful hai gentle tarike se.