Dmdm Hydantoin
Dmdm Hydantoin is a preservative ingredient. It’s in 130 products on Poliage, most often shampoo, conditioner and cleanser. Avoid lists on Poliage that include it: Formaldehyde releasers.
Updated October 21, 2026
In plain English
A preservative that slowly releases a small amount of formaldehyde to keep microbes from growing.
What it does
Contains Dmdm Hydantoin: preservative
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 33723, accessed October 22, 2026.
Products that contain Dmdm Hydantoin
Unilever
Timotei Shampoing à l’Huile d’Argan Bio Cheveux très Abimés
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
Unilever
Timotei Shampoing Huiles Précieuses 300ml Lot de 2
Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Unilever
Timotei Shampoing Huiles Précieuses 300ml Lot de 6(4+2 Offerts)
Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Issue
Tratamiento Capilar Brillo Extremo
Lists fragrance, fragrance allergens, silicones, formaldehyde releasers
Tresemme
Tresemme Shampoo coconut milk and aloe vera
Lists fragrance, sulfates, formaldehyde releasers, coconut derivatives
vaseline cocoa radiant lotion
Lists fragrance, parabens, silicones, formaldehyde releasers
Unilever
Vitalité Brillance Shampooing
Lists fragrance, fragrance allergens, drying alcohol, sulfates, formaldehyde releasers, coconut derivatives
Unilever
Volume & Care
Lists fragrance, fragrance allergens, exfoliating acid, silicones, formaldehyde releasers
Dove
Volume and Fullness Mousse
Hair styling · Lists fragrance, silicones, formaldehyde releasers, coconut derivatives
Unilever
Zero pellicule - shampooing zinc & eau de glacier
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
PreviousPage 6
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.