INCI name

SILICONE QUATERNIUM-18

Silicone quaternium-18

A cationic silicone polymer used as a hair-conditioning ingredient and emollient.

What it is

Silicone quaternium-18 is a quaternised silicone polymer formed from an epoxy-terminated dimethyl siloxane, N,N,N',N'-tetramethylhexylenediamine and hydroxyethoxyethyl dichloroacetate. CosIng lists it as an emollient and hair-conditioning ingredient.

Where it is used

Found in hair conditioners, shampoos, hair masks and leave-in products.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

The INCI name does not show the molecular weight or charge density of the polymer.

Functions

Skin conditioning – emollient
Acting as lubricants on the skin surface providing the skin with a soft and smooth appearance.
Hair conditioning
Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.

EU regulation

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

Products with this ingredient (8)

Check a full ingredient list