Tests on 33 brands of 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). The group also reported that popular brands such as Cover Girl, L'Oreal and Christian Dior contained comparatively more lead. According to the group, the FDA has not set a limit for lead in lipstick. However, the Campaign for Safe Cosmetics said that the amount of lead in one-third of the lipsticks tested exceeded the 0.1 ppm limit for lead in candy, which, like lipstick, is also ingested. Stacy Malkan, a co-founder of the coalition, said: "It's critical that manufacturers reformulate their product. It's possible to make lipsticks without lead, and all companies should be doing that." Lead has been linked to 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.