Philips Zoom Day White offers superior at-home whitening for a visibly whiter smile in one day and your whitest healthiest smile in seven to fourteen days.  Philips Zoom Whitening are the only at-home whitening products to contain amorphous calcium phosphate (ACP), which is clinically proven to reduce sensitivity, protect enamel and help improve the luster and smoothness of the teeth. Zoom Day White 14%