Poloxamer 331
- Surfactant
Low data There is not yet enough product and review data to determine preference.
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About Poloxamer 331
Poloxamer 331 is a polyoxyethylene, polyoxypropylene block copolymer.[1] In the Poloxamer number 331, the first two digits indicate an approximate molecular weight of 3300 for the oil-attracting middle section, while the last digit indicates that the water-attracting portion accounts for about 10%; the oil-attracting middle section has a relatively greater influence. In cosmetics, it is used to create emulsified formulas in which water and oil are evenly mixed and to lower surface tension so ingredients can wet, mix, and spread evenly.[2]
Poloxamer 331 Details
- Ingredient function
- Emulsifying, Surfactant
- Main product categories
- Eye Cream, Hair Dye / Bleach / Perm
- INCI name
- POLOXAMER 331
- CosIng ID
- 80147
Poloxamer 331 References
Last updated
This ingredient information is based on publicly available scientific literature, cosmetic ingredient databases, and regulatory sources from various countries. Usage restrictions, permitted concentrations, and labeling requirements may vary by country, region, and product type.
Ingredient preference is a reference metric based on user review data. It does not indicate the efficacy or safety of the ingredient itself.


