Soap bar or hand sanitizer which one is better for washing your hands? Sterilization is the main purpose of hand washing, hand sanitizer only satisfy its sterilization effect. Because most hand sanitizers contain alcohol, alcohol cannot effectively remove some dirt, such as dust, dirt, etc., attached to the small crevices of the skin. Soap bar’s ingredient: Contains glyceryl stearate. It has a good decontamination effect, and usually contains boric acid, sulfur, phenols and other bactericidal ingredients, which can eliminate certain bacteria.