Flagged ingredient
A formaldehyde-releasing preservative that can also form nitrosamines; releases a Group 1 carcinogen.
Raters don't agree. Here's where each one stands
Greenlens Ingredient Scan
Independent
Greenlens Tolerance Screen
Independent
Health Canada Ingredient Hotlist
Government
Greenlens Precautionary Screen
Independent
Greenlens Ingredient Scan
Independent
No EU-regulated hazard recognized for this ingredient.
Greenlens Precautionary Screen
Independent
A formaldehyde-releasing preservative that can also form nitrosamines; releases a Group 1 carcinogen. (IARC carcinogen monographs; ChemSec SIN List (Substitute It Now))
Greenlens Tolerance Screen
Coverage & match quality
6 ratings · 1 of 4 axes
Independent
No prohibited or high-risk classification for this ingredient.
Health Canada Ingredient Hotlist
Government
A preservative capped at 0.1% and not permitted alongside amines/amides (nitrosamine risk). (Health Canada Cosmetic Ingredient Hotlist)