I have pimples on my face.I tried many ointnents like medisalic,azifast gel,clear gel.At start these ointments decease pimples but ar the same time there is another pimple.Also there are many scars,black heads on face.Moreover there pimples are little bit bigger and create itching.How can i get rid of these pimples forever and their scars.My face is very oily