The term 'hand cleaner' can be summarized by the solution to the crossword clue 'SOAP' (4 letters). Hand cleaner is a product used to clean hands, usually in the form of a liquid or gel. It is often used in place of SOAP and water, as it is more convenient and often more effective at removing dirt, bacteria, and other contaminants from the skin. Hand cleaner is often scented and may contain moisturizers to help keep hands soft and smooth.