Halt all imports from China until this can be cleared up.
Upon inspecting the ingredients this morning, I found in my Colgate toothpaste proplene glycol, and glycerin. Glycerin has been listed as a substitute used by China. It’s not diethylene glycol, but the toothpaste does irritate my tongue and mouth. So I threw it out. I bought it at Kroger’s in the state of Washington. It is distributed out of New York, but does not say it is manufactured in U.S.A..
Ingest nothing out of China.
My Made in USA Crest has glycerin in it. It is a pretty mild substance. Some soaps, cosmetics, and toothpastes have it.
Your mouth may be irritated by the flavorings.
Usually it’s the tartar control ingredients that are irritating. Sometimes it’s the flavoring. Sodium Laurel Sulfate(SLS), a foaming agent, has been shown to cause canker sores in some people.
The Chinese have been substituting diethylene glycol instead of the glycerine, which is more expensive. Glycerine is frequently used as a sweetener and a thickening agent.