Do you ever find little fluffs of lint trapped in your bellybutton? What is that stuff, and where does it come from?
Have you ever gotten a callus and wondered what is was?
So what is actually happening when a moisturizer is rejuvenating your skin? First, moisturizers help your skin stay hydrated by either forming a barrier that prevents the water in your skin from evaporating, or by pulling water from the skin’s inner layers out to the skin’s surface.
The top layer of skin, called the epidermis, is very thin–only 1/10 of a millimeter at most. This is where cells constantly divide from the base layer and move up to the surface to be sloughed off.
Why do some creatures have spots and stripes, while others don't?