Question: are crest white strips bad for your teeth?
Answer: But Dr. Stoess-Allen shared that "If the percentage of hydrogen peroxide is 10% or less, it is a very safe home-use product." Potential gum or tooth discomfort aside, the Crest White Luxe Glamorous Whitestrips' hydrogen peroxide concentration is 9.5%, which is, according to our expert, a perfectly safe level.