Washing off makeup at the end of the day is crucial because makeup can clog pores, cause oily build-up to form and aggravate or trigger acne. Use a skin cleanser to gently remove dirt, excess oil and makeup. If your skin is prone to getting acne, try a cleanser that is specifically designed for acneic skin. Available brands have been expanded to include mousse formulations that make it easier to remove impurities. Cleanse once in the morning and again in the evening to revitalize the skin and prevent breakouts. Next, use a toner to remove any residue that is not eliminated by cleansing. The final step is to restore hydration with a moisturizer.