The Purple Routine Purple Mouthwash + Purple Whitening Strips Purple cancels yellow. That's the colour theory behind both products in this bundle — and why they work together. The strips target staining you've built up over time. The mouthwash keeps your smile looking fresh every day in between. One does the heavy lifting. The other maintains the finish. #FREESHIPPING #DealsForYouDays #drdent #whiteningstrips #mouthwash - @welcome_ish