A polyester of 3-hydroxybutyric acid, used as an abrasive and skin-conditioning ingredient.
What it is
Polyhydroxybutyrate is poly(3-hydroxybutyrate), a polyester built from units of 3-hydroxybutyric acid. It is a biodegradable polymer that many bacteria produce naturally as an energy store. CosIng lists it as an abrasive and skin-conditioning ingredient.
Where it is used
Found in a small number of products, such as scrubs and cleansers.
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 particle size or how the polymer was produced.
Functions
- Abrasive
- Removing unwanted tissue or foreign materials from various body surfaces, including mechanical tooth cleaning and/or gloss improvement.
- 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.