👉 Admit pimples, also known as whiteheads or closed comedones, occur when hair follicles become clogged with sebum (oil) and dead skin cells. This blockage happens when pores become narrowed or blocked, trapping these substances inside the follicle. As bacteria and inflammation develop within this trapped material, it can lead to the formation of small, painful bumps on the skin's surface. Unlike open comedones (blackheads), admit pimples remain closed and do not appear as visible bumps, often presenting as small, flesh-colored or slightly darker spots.