The Theravance Therabreeze is a mouthwash with no chlorine and no bleach.
It is sold by the brand’s website as “safe and effective for treating skin irritations, redness, and dryness.”
The product is not supposed to be used on exposed skin.
A review on Amazon, however, said the Therabeneze is “generally recognized as safe and effective” and was recommended by dermatologists.
The Therbeneze has been rated as “outstanding” by the Cosmetic Ingredient Reviewer’s Association (CIRRA), an industry group that reviews the safety of ingredients and standards for cosmetics.
But the review said there was “no credible scientific evidence to support” the claims that the Therbaneze is safe for the treatment of skin irritants.
It said the “possibility that this product may cause irritation and allergic reactions is not known.”
In fact, the review concluded that “the safety of the Theravances Therabrees product is a matter of ongoing evaluation.”
A CIRRA spokesperson said it does not comment on product safety issues, and that it is not a CIRSA member.
The company has not responded to a request for comment from CBC News.