this review title is: terrible allergic reaction and the content is: i ve dont have any known allergies nor have i had an allergic reaction to any other oral care products over the years i also don t have any know oral health issues i simple bought this to strengthen enamel and whiten teeth but after using it the night before i woke up with a scary swollen mouth tongue cheeks gums and lips be very careful with this product use a small amount to test before rinsing your entire mouth like you normally would.there are other information for this review, one is this reviewer did not purchase it and the other is 13 people think this review is helpful.