The American Chemistry Council, the industry’s trade group, has said that products that are labeled as containing “hydrolyzed” hydrolyzed collagen may contain “hydrogenated” hydroxypropyl esters.
Hydrogenated hydroxy propyl ester is a type of ester that is known to cause cancer and other health problems.
A study published in the journal Cancer Epidemiology, Biomarkers & Prevention found that consumers who used products containing hydroxyhydroxypropyl isobutyl estery could experience more than double the risk of developing colon cancer.
The study’s authors also found that people who use hydroxyethylene glycol and glycerin, which are often used to make high-end cosmetics, could experience a double risk of colon cancer if they use hydrolyylene glycerine and glycolic acid.
The chemical is a widely used ingredient in products including makeup, nail polish, and skin creams.
It is also widely used in cosmetics to create skin and hair texture.
A company called Tesco Health has been criticized for using hydrogenated hydrolyzated esters in its health products.
Tesco announced earlier this month that it was discontinuing the use of hydrogenated ester in its Health Care Products.
In a statement, Tesco said the decision was based on its new testing, which found “there was no significant increase in cancer incidence.”
The company said the testing revealed “a lack of evidence to suggest that hydrolyzing collagen is a carcinogen.”
The statement added that it has now “reevaluated the use and risks associated with hydrolyzerates in its Caregivers and Presumers products.”