What is the stuff inside pimples?

Sebum, bacteria, and white血 cells.

Sebum is an oily substance that is produced by the sebaceous glands. It helps to keep the skin moist and protected. However, when too much sebum is produced, it can clog the pores and cause pimples.

Bacteria are also a major contributing factor to pimples. The bacteria that live on the skin can enter the pores and cause them to become infected. This infection can lead to the formation of pimples.

White blood cells are the body's natural defense against infection. When the skin is infected, white血 cells are sent to the area to fight the bacteria. The accumulation of white cells can cause the pimple to become swollen and red.