Your skin grows really fast. Here are some cool facts about your skin and how it grows:

You have a ton of skin cells. There are about 19 million skin cells in every inch of your body.

New skin cells replace old ones. Your body is always making new skin cells and getting rid of old ones. Your body gets rid of 30,000 to 40,000 old skin cells every day! The skin you see now will be gone in about a month.

Dead skin cells are on top. The top 18 to 23 layers of your skin are made of dead cells.

New skin cells form at the bottom of the epidermis, which is the top part of your skin.