Is the pen safe for enamel? June 17, 2021 13:34 Updated Yes, the Colgate Optic White Overnight Teeth Whitening Pen has an enamel safe formula. Related articles Are the ingredients safe for the environment? The packaging says the product is flammable, can you travel with it on an airplane? What if I am unhappy with the results? Am I allowed to eat or drink after application? Do you test on animals? Comments 0 comments Article is closed for comments.
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