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Compact by Design is a new sustainability certification created by Amazon to identify products that, while they may not always look very different, have a more efficient design. With the removal of excess air and water, products require less packaging and become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions.Learn more about this certification Crest Whitestrips Supreme has 100mg of gel with 14% hydrogen peroxide = 14mg of hydrogen peroxide per upper strip. Crest Whitestrips Professional has 200mg of gel with 6.5% hydrogen peroxide per upper strip. Crest Whitestrips Supreme is the most effective of the Crest Whitening Strips. This product should only be used as directed by your dentist. This product should only be used for tooth whitening . We will not responsible for misuse of the product or negligence. If you have allergies to certain chemicals, please consult with your dentist before using this product.Whitestrips: Purified water, Glycerin, Hydrogen Peroxide, Carbopol 956, Sodium Hydroxide, Socium Acid Pyrophosphate, Sodium Stannate, Sodium Saccharin. Whitening Toothpaste active Ingredient: Sodium Fluoride 0.243% (0.15% w/v/ fluoride ion)Please refer to instructions included with the product.This product should only be used as directed by your dentist. This product should only be used for tooth whitening. We will not responsible for misuse of the product or negligence. If you have allergies to certain chemicals, please consult with your dentist before using this product. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.

