Poloxamer 331

  • Surfactant

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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

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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.