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Formaldehyde
Also known as: Formalin, DMDM Hydantoin, Quaternium-15, Diazolidinyl Urea
What is it?
A known carcinogen used as a preservative. Often hidden behind formaldehyde-releasing preservatives that slowly release formaldehyde over time.
Concerns
Carcinogen (IARC Group 1), skin sensitization, respiratory irritation
Commonly Found In
Hair straightening treatments
nail polish
eyelash glue
Safer Alternatives
Phenoxyethanol
Ethylhexylglycerin
Benzyl Alcohol