OH DAISEY INGREDIENT LIBRARY
Diazolidinyl Urea
Can release formaldehyde over time and may cause allergic reactions in sensitive individuals. Considered safe when used within cosmetic regulations.
OH DAISEY VERDICT
Avoid
Evidence level: Strong
Why Oh Daisey rates it this way
Can release formaldehyde over time and may cause allergic reactions in sensitive individuals. Considered safe when used within cosmetic regulations.
What it does
Prevents growth of bacteria, mold, and yeast
How to read this rating
This rating reflects the Oh Daisey ingredient standard and the evidence currently available for cosmetic use. Product safety can also depend on concentration, exposure route, formulation, manufacturing quality, and individual sensitivity.