UC Berkeley’s School of Public Health has investigated 32 different lipsticks and lip glosses for potential health risk through absorption and ingestion.
Researchers found that even an average use of certain lipsticks and lip glosses could expose a user to excessive levels of chromium, a carcinogen linked to stomach tumours.
Average use could also be linked to higher toxicity in the nervous system over a long period of time.
Lead was found in 24 products but at levels lower than the acceptable daily intake, although this can still prove harmful to children playing with cosmetics.
Read more at University of California, Berkeley