Sunscreen lotion তৈরিতে কোনটি ব্যবহৃত হয়?

ব্যাখ্যা

Zinc oxide is blended into sunscreens as a very fine powder, usually made from allowing zinc oxide vapour to react with oxygen. This usually produces ZnO granules a few micrometres (a millionth of a metre) across. These give the lotion or spray a dense, white appearance. That can be helpful to ensure the user gets