This ingredient appears on shampoo labels as DEA. It is typically added to increase lather, but DEA has been shown to increase liver tumors in lab animals.
Formaldehyde is a skin and respiratory system irritant and considered a human carcinogen by health agencies. This substance appears in nail polish and hair straightening salon treatments. Look for nail polishes that state they are free of formaldehyde.
This substance is used to lighten skin color. It is found in skin creams and under-eye circle treatments. Hydroquinone has been linked to cancer in lab animals.
Found in toothpaste, shampoo, makeup, and moisturizer, these are identified by “methyl-“, “ethyl-“, “propyl-“, “butyl-“, and “isobutylparaben” on labels. Animal studies reveal that these parabens have estrogenic effects.
Also called PPD, this substance is found in hair dyes. It causes irritation to the lungs and nervous system.
These often appear on product labels as petroleum or liquid paraffin. The European Union has restricted or banned these ingredients because of their connection to cancer.
Phthalates are plasticizing chemicals strongly suspected endocrine disruptors. This is a common ingredient in nail polishes, shampoos, and fragrances. Phthalates are also called DBP.
Talk is found in many body powders and some makeup. It is a suspected carcinogen. When purchasing body powder, look for cornstarch-based or talc-free formulas.