If the pores of the skin are blocked by oil released by the sebaceous gland or by dead hair or by bacteria, the result is acne or pimple. The skin contains numerous pores and every pore is the opening of a follicle, which consists of a hair and sebaceous or oil gland. The oil is released from this gland and it comes out on skin out of the pore, climbing up the hair.

Some people develop scars from acne. The most common treatment for removing pimples or acne are laser therapies and chemical peeling. The procedure results in the removal of the scarred surface of acne and exposes unblemished skin layers. Other procedures used for acne removal are (i) Micro-needling- collagen is stimulated and acne scars become less visible (ii)  Subcision- breaking up of scars by using needles (iii) Fillers- injections under scars for lifting them up (iv) Glycolic / Salicylic superficial peels for loosening white/blackheads and decreasing pimples (v) Microdermabrasion along with laser therapy. Nonetheless, laser therapies are considered most effective in making acne disappear.