INCI name

PCA DIMETHICONE

PCA dimethicone

A silicone modified with pyrrolidone carboxylic acid groups, used as a hair- and skin-conditioning ingredient.

What it is

PCA dimethicone is a dimethicone (polydimethylsiloxane) in which some methyl groups are replaced by propyl groups bearing pyrrolidone carboxylic acid (PCA). CosIng lists it as a hair-conditioning and skin-conditioning ingredient.

Where it is used

Found in conditioners, hair masks, leave-in products, creams and lotions.

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 the proportion of PCA-bearing units.

Functions

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.
Skin conditioning
Maintaining the skin in good condition.

EU regulation

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

Products with this ingredient (7)

Check a full ingredient list