How do I get rid of acne in about 2 weeks?

I'm starting eighth grade in two weeks and it's suppose to be the biggest year for me but the problem Is that I have bad acne problems and i'm really stressing out about if it's gonna go away in time. I can't buy anymore acne cleansers or stuff but I still have this one bottle left for acne that might help. It's called Arnaud. But what can I do to make my acne go away in two weeks without buying anything else. Please please

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