You can begin your acne treatment when you are affected by it. It is important to understand the reasons for acne. The focus of acne treatment is to first unclog the pores and then kill the bacteria and at the same time reduce the oil levels. You can unclog or open the pores by using mild cleansers like a mild cleansing bar or liquid. This will keep your skin clean and reduce irritation or sensitivity. You can also use a wide range of mild scrubs, exfoliants and masques. Likewise there are many anti bacterial cleansers that help in killing the bacteria. Apart from these, you have topical applications like gels, creams and lotions that can be applied to the affected area.