Substances applied to the skin are absorbed and can be incorporated into cell membranes.

“what we know is that when you put things on your skin your body absorbs them this is like the big organ right whether it's your face your chest your back your arms our body takes things in we don't see it as porous but i mean the sweat comes out of our skin there's pores right there's like all these little holes in our skin where basically this this this field of skin with all these little holes in it and so when you put something on like this field with holes all of it seeps down into the dirt which is the inside of our body”