Quaternium-18
Quaternium-18 is a surfactant and cleansing ingredient. It’s in 8 products on Poliage, most often conditioner. Avoid lists on Poliage that include it: none.
Updated October 21, 2026
What it does
Contains Quaternium-18: antistatic
Function listed in CosIng
Contains Quaternium-18: hair-conditioning
Function listed in CosIng
Contains Quaternium-18: surfactant
Function listed in CosIng
Contains Quaternium-18: cleansing
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 37408, accessed October 22, 2026.
Products that contain Quaternium-18
Aussie
3 Minute Miracle Shine
Lists fragrance, fragrance allergens, drying alcohol, silicones
As I Am
As I Am Coconut Co-Wash
Lists fragrance, fragrance allergens
Herbal Essences
Body Envy Volumizing Conditioner
Conditioner · Lists fragrance, fragrance allergens, silicones
Pantene
Crema para peinar (fuerza y reconstrucción)
Lists fragrance, fragrance allergens, parabens, silicones
Aussie
KIDS CURLY LEAVE-IN CONDITIONER
Conditioner · Lists fragrance, fragrance allergens, silicones
Aussie
MIRACLE COILS LEAVE-IN MOISTURIZER
Conditioner · Lists fragrance, fragrance allergens, parabens, silicones
Aussie
MIRACLE CURLS LEAVE-IN DETANGLING MILK
Conditioner · Lists fragrance, fragrance allergens, parabens, silicones, coconut derivatives
Pantene
Oil replacement
Lists fragrance, fragrance allergens, drying alcohol, parabens, silicones
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.