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Formaldehyde (Methanal)

INCI name: Formaldehyde.
Function: Preservative.
Origin: Synthetic.
Concentration allowed by European regulations : Banned in Europe.
Where to find it / them? : Hair serums, nail polish, shampoos, conditioners, shower gels, liquid hand soaps, nail hardeners, hair gels, lotions, deodorants, moisturizers, cleansing creams, toothpastes.
Risks to health: Proven carcinogen, potential skin irritant, potential allergen.
Risks to the environment : /
More information : Classified as a human carcinogen by IARC.