Diethanolamine (DEA), Monoethanolamine (MEA), and Triethanolmine (TEA) are hormone-disrupting chemicals known to form nitrates and nitrosamines, often in conjunction with other chemicals present in a product, e.g. Cocamide DEA, or Lauramide DEA. They are almost always in products that foam: bubble bath, body wash, shampoo, soap, facial cleanser.
You may find some of the chemical ingredients below, listed on the labels of products you regularly use for personal hygiene:
On the US TV show "CBS This Morning", Roberta Baskin said that "It [DEA] is in hundreds of cosmetic products....but it does something more than make soap bubbles. A Federal government study says that DEA and DEA-based detergents have been shown to greatly increase the risk of cancer, especially liver and kidney cancer…."
John Bailey, head of the cosmetic division for the FDA, says that the new study is especially important since "the risk equation changes significantly for children." Tests at the University of Bologna in Italy found TEA to be the most frequent sensitiser used in cosmetics, gels, shampoos, creams, lotions, etc.
U. S. Food and Drug Administration
Centre for Food Safety and Applied Nutrition
Office of Cosmetics Fact Sheet
December 9, 1999