EZZI Teeth Whitening Kit | Fast Whitener Gel 44% Carbamide Peroxide | for Discolored, Yellow, Brown, Black, Coffee, Smoking, Intrinisic Deep Stains

• NOT FOR SENSITIVE TEETH or GUMS. Due to its high concentration of Carbamide Peroxide, it will increase sensitivity. Sensitivity is temporary and subsides over a few days to weeks. It is recommended to start brushing with anti-sensitivity toothpaste 2 weeks prior to using this whitener. WHITENS MORE THAN PROFESSIONAL WHITENING. Research shows that at-home Carbamide Peroxide whitens better than one-time in-office whitening treatments. See "Review of the Effectiveness of Various Tooth Whitening Systems" BA Matis MA Cochran G Eckert DEEPER WHITENING. Due to the long active time, EZZI whitens deeper than other peroxide forms. SAFE FOR ENAMEL. Research shows that Carbamide peroxide is safe for enamel hardness and remineralization. See "Influence of tooth bleaching on dental enamel microhardness: a systematic review and meta-analysis" J Zanolla,* ABC Marques,* DC da Costa,* AS de Souza, M Coutinho* TRAYS INCLUDED. Boil and bite trays are included, but EZZI gel can also be used with orthodontic aligner trays, retainer trays, or professional dental office whitening trays. NOTICEABLY FAST RESULTS. Whiter teeth within 1 to 3 treatments.