Whiter teeth, without the burn (IMAGE) American Chemical Society Caption A new bleaching gel whitened tooth samples by six shades, using a low level of hydrogen peroxide (12%). Credit Adapted from ACS Applied Materials & Interfaces 2021, DOI: 10.1021/acsami.1c06774 Usage Restrictions Image may be used with credit shown. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.