ATLANTA: Lipsticks tested by a US consumer rights group found that more than half contained lead and some popular brands including Cover Girl, L'Oreal and Christian Dior had more lead than others, the group said on Thursday.

The Campaign for Safe Cosmetics said tests on 33 brand-name red lipsticks by the Bodycote Testing Group in Santa Fe Spring, California, found that 61% had detectable lead levels of 0.03 to 0.65 parts per million (ppm).

Lipstick, like candy, is ingested. The Campaign for Safe Cosmetics, a coalition of public health, environmental and women's groups, said the FDA has not set a limit for lead in lipstick.

One-third of the lipsticks tested contained an amount of lead that exceeded the US Food and Drug Administration's 0.1 ppm limit for lead in candy - a standard established to protect children from ingesting lead, the group said. Thirty-nine per cent of the lipsticks tested had no discernible lead, it said.

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

Lead can cause learning, language and behavioral problems such as reduced school performance and increased aggression. Pregnant women and young children are particularly vulnerable to lead exposure, the group said in its statement. Lead has also been linked to infertility and miscarriage, it said. Over the last three months, more than 20 million toys made in China have been recalled, mostly due to the use of lead paint.