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Review title: warning
Product review: I am only on my second day and am afraid to finish the pack. I had the trays on for 45 minutes as instructed and when I took them off my gums looks damaged. They were white and discolored, but now the color is returning. The gel really hurts my gums. I've used Crest strips and did not have this much tooth and gum pain. It's not worth taking the risk of using this product.
