My problem with pimples

I am a 16-year-old lady battling with pimples which are on my face and chest. I have administered various antibiotic creams and drugs with no improvement. Kindly help me.
Ngozi (by SMS)

Pimples are usually common at your age because of the effect of hormones and the oily nature of your skin. In addition to the common anti-pimples medications in the market, you need to keep your skin clean and dry. Fortunately as you grow older, the effect of the hormones on your skin will reduce in addition to the pimples.