Appreciate scabs can fall off if picked but if not picked how do they naturally “fall off and go away”?
Such as flat scab? Do they get pushed off due to new skin underneath pushing it?
In: Biology
Basically the scab doesn’t get “pushed off” but it is no longer needed and the underlying skin has healed enough to be exposed (tissue regeneration). The drying and weakening of the scab causes it to naturally fall off due to everyday minimal friction.
Skin cells are really well attached to themselves (and things like scabs) near the bottom layer of your epidermis, i.e. your skin. As new skin gets generated from the bottom, skin cells are pushed up and out, and as they do they get harder, drier, and less attached to everything around them.
Eventually this means they just flake off, so your skin is constantly being replaced from the inside out. A scab that was protecting that bottom layer eventually gets pushed out too, and as the skin cells around it get weaker, it eventually has nothing attaching it to you, and it falls off
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