Common myth among people is that pimple scars can be removed by a face wash.  Thing is a good face wash just helps to keep your face clean and helps in giving that instant glow and suppleness to face which stay for an hour or two. Pimple or acne scars have to he treated in a very methodical way by dermatologist. Various topical and well as minor surgical methods including lasers only works rest acts as subsidiary agents. Do consult a proper dermatologist and get a tailored treatment for your skin. Skin varies from patients to patients.