Formaldehyde-Releasing Preservatives (FRP) also known as DMD hydantoin, diazonlidinyl urea, imidazolidinyl urea, methenamine, quaternium-15 and sodium hydroxymethylglycinate. These can trigger allergies and are banned for use in Japan and Sweden.
Any ingredient that has eth as its suffix, such as sodium lureth sulphate, may contain 1,4-dioxane, which is a known carcinogen and hormone system distorter. It is often found in shampoos and body washes.
Look for these terms, which identify mineral oil (a by-product of crude oil) in its different states: mineral oil (liquid), petrolatum (jelly) or paraffin wax (solid). Another name often used is liquid paraffin. Unlike naturally occurring oils, mineral oil blocks the skin and can cause itching or rashes.
POLYETHYLENE GLYCOLS (PEGS)
Small amounts of 1,4-dioxane can be found in this ingredient, which is often listed as PEG-6, PEG-8, PEG-32 and so forth. Products containing PEGs should not be used on broken or damaged skin.
This can be found in many antibacterial cleaning products as well as in toothpastes and mouthwashes. Triclosan is an endocrine disruptor that may interfere with the functioning of the thyroid hormone.