Puberty very or pimples, cause why?

Acclear answer: When in puberty, hormones in the body changes, stimulates the sebaceous glands to secrete more oil, usually to protect the skin, but when oil mixed with dead skin cells which clogs the pores with bacteria resident on the skin surface, from which will form colonies.

In daily activities, what other factors like hot, humid climate peculiarities, weather, environment, pollution, cosmetics, stress will make the pimples grow rapidly and become more severe.

In addition, the diet too much fat and sweets also make the skin emerges more acne than in this period.