Question

Is there a dua to get rid of/stop getting/clearing teenage spots (acne) which appear on face/chest/back?

Answer

Firstly, get medical help from a doctor or a good hakeem.  Secondly, take a one metre long piece of black thread, read Surah ar-Rahman and every time you come upon “fa bi ayyi aalaai rubbikuma tu kazzibaan”, tie one knot on the thread and blow on it.  This verse is repeated 31 times, so you will tie 31knots.  Keep blowing on the knots as you tie them, then wear it on your neck.  Make dua to Allah that “O Allah, good health is also your ni’mah and I will never deny any of your favours.  Please restore my good health.” Insha Allah-Allah will cure you from the illness.