INCI name: Formaldehyde.
Function: Preservative.
Origin: Synthetic.
Concentration allowed by the EU regulation: Banned in Europe.
Where to find it / Where they are found?: Hair serums, nail polish, shampoos, conditioners, shower gels, liquid hand soaps, nail hardeners, hair gels, lotions, deodorants, moisturizers, cleansing creams, toothpastes.
Health risks: Proven carcinogen, potential skin irritant, potential allergen.
Environmental risks: /
Alternative :
Additional information: Classified as a human carcinogen by IARC.