Acne is not caused by dirt or surface skin oils. Although excess oils, dead skin and a day s accumulation of dust on the skin look unsightly, they should not be removed by hand scrubbing. Vigorous washing and scrubbing will actually irritate the skin and make acne worse. The best approach to hygiene and acne. Gently wash your face twice a day with a mild soap, pat dry and use an appropriate acne treatment for the acne.