"Cosmetic companies are required by law to substantiate the safety of their products before they are marketed. Nothing matters more to cosmetic companies than the safety and the well-being of the people who use and enjoy them," Loretz added.
The findings are not surprising, said Dr. Luz Fonacier, head of the allergy and training program at Winthrop University Hospital in Mineola, N.Y. Many lip products are packaged in metal containers, she said, "and this may affect the amount detected by investigators."
"I agree with the authors that there should be U.S. standards for metal content in cosmetics and that monitoring of metals in cosmetics, especially those with a higher likelihood of ingestion or absorption, should be done," Fonacier said.
Dr. Ken Spaeth is director of occupational and environmental medicine at North Shore-LIJ Health System in New Hyde Park, N.Y. He reviewed the findings and has written a book for doctors on detecting heavy metal exposure problems.
He said, "The findings should certainly raise concern about the use of the products."
Certain people should be especially careful about exposure, he said, including pregnant women and teens. "The fetus is particularly susceptible," he said. "And brain development continues throughout adolescence."