Controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2022
CAO Group files patent complaint against P&G over Crest whitening strips
Lawsuit filed
In a controversy noted in the Crest brand wiki, CAO Group filed a complaint in the U.S. District Court for the Central District of California alleging that Procter & Gamble's Crest teeth whitening strip products infringe CAO patents. The source reports the allegation only; it does not state that a court has made any determination on the claim. The filing concerns the Crest whitening strip products and CAO's patents, and no outcome or ruling is described in the source material.
Source excerpt
The CAO Group, Inc. (CAO), a world leading high-technology dental company, has filed a complaint with the United States District Court for the Central District of California against The Procter & Gamble Company and The Procter & Gamble Distributing LLC, declaring that their Crest® teeth whitening strip products infringe claims of CAO's U.S. patents 10,603,259 and 10,646,419.
Crest Pro-Health mouthwash tooth-staining controversy
Consumers reported tooth staining associated with Crest Pro-Health mouthwash, whose cetylpyridinium chloride ingredient was identified as a possible cause in a small percentage of users. A related federal class-action lawsuit was later dismissed. The product subsequently carried a warning about possible staining.