Each of the
hair follicles on your body are connected with glands which produce oily substance
to lubricate your skin and hair to do that the substance known as sebum need to
move out through the opening of the follicle bit sometimes the sebum acts almost
like a glue for the dead cell of the skin. Together they form a soft plaque that
blocks out the output, but he gland continues to produce sebum and the plaque
grows. That can stimulate the local bacteria like staphylococcus to reproduce. Increasing bacteria leads to response by the immune
system. A pimple is a visible evidence of this process- white puss formed from
sebum and dead cells and bacteria. The redness is due to the response of the
immune system which tries to kill the bacteria and heal the tissue.
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