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Does prolonged use of mouthwash cause staining?

The product I have is Amway.

They used pigment.

It has a greenish tint, and there is a psychological concern that prolonged use might cause staining or be harmful to health.

Can I use it with peace of mind?

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    안은영
    앗 저도 색있는 가글 사용하는데 제 경험상으론
    착색안되는것같아요 성분을 잘 알아봐야겠네요