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Review title: Makes your GUMS white
Product review: This product made part of my gums white and puffy after wearing the trays for 20 minutes. I have healthy gums overall, so I guess they are "sensitive". The whiteness has subsided after about 30 minutes but I will not use this product again. Be careful and if your gums sting, remove the trays and rinse. Better yet -- don't get this product.
