Whitening powders typically use abrasives to scrub away surface stains which can lead to things like enamel etching and sensitivity. Instead of an abrasive whitening method, the PAP+ Powder oxidizes stains through the use of PAP (Pthalimidoperoxycaproicacid), without causing pain or sensitivity.
Add PAP+ powder to any toothpaste by dipping your toothbrush directly into the jar, and brushing thoroughly for 2 minutes.