Er, dunno where the killing of the kidneys came in there.
Superdrug do a good antibacterial face wash, its a thick gell and its really good. or you could use dermalogica, its a company who produce really really good products for the skin, their acne prone range really helped to clear up my face, its expensive though, last ages too!
I'd advise you try that, but if it still doesnt work, see a doctor. Just be cautious, some of the pills they put you on (Roacutaine for example) can make you REALLY moody. It is most likely just a teenage thing, its all hormone balance. The Contraceptive Pill can help them to go if its a hormone balance issue thats causing it.
Good luck