What tooth whitener do Crest Whitestrips ® contain?
The bleaching agent utilized in Crest Whitestrips ® is hydrogen peroxide. Crest Whitestrips ® (the original product) has a 6% hydrogen peroxide whitener applied to it. The concentration of the hydrogen peroxide applied to Crest Whitestrips ® Premium is 10%. In comparison, tray-based teeth whitening using a 10% carbamide peroxide whitener delivers an equivalent hydrogen peroxide concentration of about 3.5%.