Ingredient
Formaldehyde
Risky
What is this ingredient, what does it do?
Preservative (banned in EU cosmetics)
May be an allergenMay cause irritation
What is it, what should you do?
A substance classified as a definite carcinogen (Group 1); banned as a cosmetic preservative in the EU. It may still appear in nail hardeners and some keratin/straightening treatments; if you have a keratin blow-dry done, ask the salon to confirm they use a formaldehyde-free product.
Other names: Formalin, Formaldehit
Related ingredients
This is general information, not medical advice. The assessment may vary by skin type.
Start scanning