I’m seeing a lot of activity about Deborah Blum’s interesting article on the hazardous metals used in lipsticks. The article has been shared widely in my circles and certainly got me engaged. Having just read Johnathan Chung’s statistical critique of the studies below, there is more to think about.
After first reading Blum’s article, I went back to the research published in Environmental Health Perspectives. I was initially struck by the methodology, where the researchers measured the impact of metals in lipsticks using comparisons to metals in water consumption. They did this because the materials used in lipsticks are not regulated in the USA. Blum notes that manufacturers have shown that they can manipulate the levels of these metals when they want to. I commented on Gaythia Weis’ post that these findings represent a powerful argument against self-regulation by industry. I think this comment stands, however, Chung argues that the sample and statistics overstate their case. It doesn’t change the fact that the metals used are dangerous, but Chung notes that the ingredients need to be put into statistical perspective and in context of how they are used. We don’t drink lipstick and our bodies don’t absorb these metals to the extent being reported.
The broader issue that I see arising from Blum and Chung’s analyses is that ordinary consumers are often unaware of the properties used in everyday products. While many of us have read other articles that warn about the dangerous compounds in make-up, new studies lead to a new wave of concern. The public is hungry for scientific guidance on how to respond to conflicting research. For these reasons, I love seeing scientists engaging with research in public forums, as both Blum and Chung have done.