Whats the best way to get rid of acne fast without buying a cleanser?

Scientific Rx: If two weeks on over-the-counter benzoyl peroxide doesn't clear you, get with your physician. You may be a rx for a topical retinoic acid derivative, the oral contraceptive pill (if you're female), topical clindamycin, a systemic antibiotic such as tetracycline, or a dermatology referral for possible isotretinoin. All acne is manageable today; it's not a hygiene or lifestyle problem. We can help.

There is none: Sorry, there are no miracles. You cannot resolve acne by doing almost nothing.