Smile Direct Club Gel Teeth Whitening Pro System optimizes your smile in just 1 week, getting teeth twice as bright*. First, ProActivate™ whitening accelerator toothpaste breaks up stains and boosts brightening results by 65%. Next, ProBrighten premium teeth whitening pens and patented 20-LED accelerator light whiten teeth up to 9 shades k. The third and final step, ProLong™ whitening extender gel, protects and prolongs results by preventing new stains from forming. One treatment of the Pro Whitening System takes just 1 week to complete, with results lasting up to 6 months.