Question

why do some adolescent develop pimple and acne on their faces​

Answer 1

Answer:

Acne is caused by overactive oil glands in the skin and a build-up of oil, dead skin cells, and bacteria, which leads to inflammation in pores. Oil glands become stimulated when hormones become active during puberty, which is why people are likely to get acne in their teens

Answer 2

Explanation:

During puberty the secretion of sweat glands and sebaceous glands (oil glands) increases. Many young people get acne and pimples on the face at this time because of the increased activity of these glands in the skin.