If there is a problem with the function of the lamp within one month, we can return it in the next order, but if it is a problem with the gel, it can’t, because everyone’s teeth are different.
If the function of the lamp in a month has a problem, we can return the next order, but if it is a gel problem, that is not, because everyone's teeth are different.
If there is a problem with the function of the lamp within a month, we can replace it with the next order, but if it is a gel problem, it can not be because everyone has different teeth.