In short, yes. As with any treatment, Zoom Whitening needs to be used according to instructions in order to be safe and effective. Be sure to follow the teeth whitening directions contained carefully. Some whitening products can irritate your gums or cause undue sensitivity if used improperly or too often. Clinical studies have shown that whitening your teeth with carbamide or hydrogen peroxide under the supervision of a dental professional is safe for teeth and gums. Philips Whitening gel formula includes fluoride, amorphous calcium phosphate (ACP) and potassium nitrate. Fluoride and ACP have been shown to help strengthen and protect enamel while potassium nitrate helps to reduce tooth sensitivity. Together the combination helps maintain the health of the teeth.