A polymeric biguanide used as a preservative, regulated in Annex V.
What it is
Polyaminopropyl biguanide is the INCI name used for poly(hexamethylene biguanide) hydrochloride, a cationic polymer with repeating biguanide groups, often abbreviated PHMB. CosIng lists it as a preservative. In the EU it is listed in Annex V (allowed preservatives).
Where it is used
Found in cleansers, wet wipes, makeup removers, deodorants and other products that need preservation.
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.
See the EU regulation section for the applicable limits and conditions. Despite the name, the polymer is built from hexamethylene units, not aminopropyl units.
Functions
- Preservative
- Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.
EU regulation
- Maximum concentration
- 0.1%
- As of
- 3 November 2026 · (EU) 2019/831
Scientific opinions (SCCS)
Opinions of the EU Scientific Committee on Consumer Safety that mention this ingredient. They assess specific uses and concentrations; read the opinion for its scope.
Products with this ingredient (19)
- 30% Off: Mini Cleanse & Glow Trio: Skincare Kit · Charlotte Tilbury
- Take It All Off: Eye Makeup Remover · Charlotte Tilbury
- Take It All Off 30ml: Eye Makeup Remover · Charlotte Tilbury
- Hyaluronic Nutri Mousse With Ginseng · ArtDeco
- Luksusowy płyn micelarny z molekułami złota · Eveline Cosmetics
- Dermatologiczna emulsja myjąca do skóry ultrawrażliwej – 30 ml · BasicLab
- Zestaw: Dogłębne oczyszczenie skóry ultrawrażliwej · BasicLab
- Dermatologiczna emulsja myjąca do skóry ultrawrażliwej – 100 ml · BasicLab
- Dermatologiczna emulsja myjąca do skóry ultrawrażliwej · BasicLab
- neuBROW Brow Enhancing Serum · Neulash
- RapidShield Eyelash Daily Conditioner · RapidLash
- RapidBrow Eyebrow Enhancing Serum · RapidLash

