A copolymer of a betaine-type methacrylate with methyl methacrylate, used as an antistatic and film-forming ingredient.
What it is
Polyquaternium-30 is, according to CosIng, a polymer of a carboxymethyl dimethylammonium ethyl methacrylate (a betaine-type monomer) with methyl methacrylate. CosIng lists it as an antistatic and film-forming ingredient.
Where it is used
Appears on the ingredient lists of a small number of 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.
Functions
- Antistatic
- Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
- Film forming
- Producing (upon application) a continuous film on the skin, hair or nails.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

