Before 1 month I have buy 1 pair of joy lip guard and found it doesnt work on lips and its look didnt like familier beacues of smell
However this lipguard or anyother are easy to use but I dont like the test and smell also I think other like vaseline that is more effective than this ever and ever will I guess
Either you got senstive or hard skin, it may give problem with its taste , so careful before using beacuse I use this product my openion is too bad taste and smell also, I would not recommend to you beacues I know your value.