Question: are you supposed to use crest whitening strips every day?
Answer: Q: How many times a day should you use Crest Whitestrips? A: According to Crest, you can use whitening strips up to twice every day. ... At best, Crest's whitening toothpaste may help remove some surface stains (called extrinsic staining). The peroxide in Crest Whitestrips, however, will actually whiten the tooth's color.