Commonly found in: mascara, hair dyes, foundation, fragrances, sunscreens, pharmaceuticals, shampoo, and lotion.
Why you should avoid it: Ethanolamines, which often show up on labels as MEA, DEA, TEA, triethanolamine, or diethanolamine, may be linked to organ system toxicity and some cancers. In fact, the EU bans DEA in cosmetics. One study suggests that an offspring's memory function and brain development could be permanently impacted if the mother is exposed to DEA.
Products without ethanolamines to try instead: