Welcome and thanks for posting your query to HealthcareMagic.
As per your query you have rashes on legs with stained teeth for which you are using crest pro health mouthwash. So you want to know whether this mouth wash is causing the rash or not.
There is no any correlation of the rash with mouth wash in your case. The important reason being that any kind of chemical including the mouth washes if cause a rash then it should be a generalized rash and not a localized one. Because in these cases of allergy
to mouth washes or any chemical agent the hypersensitivity
So rest assured about the mouth wash. Still if you have any doubts then can stop the mouth wash for few weeks if the rash do not subside then check for the exact cause with the help of dermatologist
I hope these information's will help you. If you have further queries I will be happy to help.
"Wish you good health"
Dr Sanjay Kumar Kanodia
MD (Dermatology )