Check the listing for details. DRDENT Purple Whitening Strips: 14 strips, Enamel-Safe, Peroxide-Free Teeth. Condition: New. Listed at 26.68 USD. DRDENT Purple Whitening Strips are a convenient and effective way to whiten your teeth safely. With 14 enamel-safe strips that are peroxide-free, these teeth whitening strips from DR.DENT are gentle on your teeth and help remove stains without causing sensitivity. The active ingredients include glycerin, aqua, phthalimidoperoxycaproic acid, propylene glycol, and cellulose gum, ensuring a non-toxic and safe treatment. The minty flavor of menthol adds freshness to your dental care routine, making these strips a popular choice for achieving a brighter smile.DRDENT Purple Whitening Strips are a convenient and effective way to whiten your teeth safely. With 14 enamel-safe strips that are peroxide-free, these teeth whitening strips from DR.DENT are gentle on your teeth and help remove stains without causing sensitivity. The active ingredients include glycerin, aqua, phthalimidoperoxycaproic acid, propylene glycol, and cellulose gum, ensuring a non-toxic and safe treatment. The minty flavor of menthol adds freshness to your dental care routine, making these strips a popular choice for achieving a brighter smile.