Please refrain from purchasing if you are a perfectionist or overly sensitive. Whitening Sheets Ruby White 1 box of 28 sheets (14 applications) + 20 sheets (10 applications) [Product Description] Ruby White Clear Sheets are whitening care sheets that contain sodium bicarbonate and xylitol, allowing for easy at-home use. With a simple application to your teeth, these sheets support natural whiteness and a smooth, polished finish. [Features] ・Contains whitening care ingredients (sodium bicarbonate, xylitol) ・Adheres to and lifts away yellowing and stains on teeth ・Easy 3-step process: Apply → Wait → Brush [Additive-Free Design] Free of preservatives, mineral oil, UV absorbers, petroleum-based surfactants, silicone, parabens, foaming agents, synthetic colorants, abrasives, ethanol, animal-derived ingredients, and sulfates. ※This is a cleaning-type whitening care sheet that does not use bleaching agents (hydrogen peroxide, carbamide peroxide) and removes surface stains from teeth. [Manufacturing] Manufactured in a factory certified by SGS and FDA. [How to Use] ① Apply the sheet to your teeth. ② Leave it on for 20-30 minutes. ③ Peel off and brush your teeth.