To remove the white residue, soak the plate or bowl in warm, soapy water and rinse thoroughly. Should residue persist, try rubbing a mild baking soda paste to remove any residue deposits.
To avoid the build-up of residue, always use undiluted, unscented sulphate-free baby bottle detergent or dish soap and wash off thoroughly. Should white residue still persist, do get in touch with us at cs@hegen.com.