If your child is small, hold him or her to help him reach the sink. If your child can stand, use a safety step to boost him or her up to the faucet.
If your child is too heavy to lift and there’s no step nearby, wipe his or her hands with a damp and soapy paper towel. Use another clean, wet paper towel to rinse soap off the hands. Dry the hands with a third clean paper towel. Wash your own hands after helping your child.