A coalition of environmental and public health groups advocating toxin-free products released a report Thursday warning that toys and backpacks are not the only products containing unsafe levels of lead: lipsticks are just as likely to include lead in their composition.

The Campaign for Safe Cosmetics issued a news release Thursday saying it had conducted tests, through an independent laboratory, of 33 brand-name lipsticks, including L’Oreal, Cover Girl, Christian Dior and Revlon.

The results showed that 61 percent of the lipsticks tested contained detectable levels of lead of 0.03 to 0.65 parts per million (ppm). One-third of the tested lipsticks exceeded the U.S. Food and Drug Administration’s 0.1 ppm limit for lead in candy, a standard set to protect children from directly ingesting lead, the group said.

The coalition noted that the Food and Drug Administration has not set a similar standard for lead levels in lipstick.

On a more positive note, 39 percent of the lipsticks tested showed no detectable levels of lead. The group said that less expensive brands such as Revlon had no detectable levels of lead, while the more expensive Dior Addict brand had higher levels than some other brands.

None of the lipsticks listed lead as an ingredient, the CSC noted.

“It's critical that manufacturers reformulate their product,” Stacy Malkan, a co-founder of the coalition, said in a news release. “It's possible to make lipsticks without lead, and all companies should be doing that.”

The group’s statement specifies that lead has been proven to cause “learning, language and behavioral problems such as lowered IQ, reduced school performance and increased aggression.” Pregnant women and children are particularly at risk, the group said, adding that lead has also been linked to infertility and miscarriage.

Reuters reports that the Cosmetic, Toiletry and Fragrance Association trade group issued a statement saying that lead is not deliberately included as an ingredient in lipstick but is rather a naturally occurring element.

The FDA has “set strict limits for lead levels allowed in the colors used in lipsticks, and actually analyze most of these to ensure they are followed,” the association's statement said. “The products identified in the (CSC) report meet these standards.”

L'Oreal's U.S. division also answered the coalition’s report, stating that its products are reviewed and tested by a safety team that includes toxicologists, pharmacists and doctors, reports Reuters.

“All the brands of the L'Oreal Group are in full compliance with FDA regulations” as well as safety requirements in international markets, L'Oreal USA said in a statement.

The CSC’s report lists two L’Oreal lipsticks among the top brands testing positive for lead, followed by one Cover Girl lipstick and a Dior Addict product.

This report on lipstick containing high levels of lead comes on the heels of a string of toy and backpack recalls due to lead concerns.