Suspending/dispersing agent

No known benefits

Polyester-5 at a glance

  • A film-forming agent used in skin care, hair care, and body care formulations
  • Helps hydrophobic ingredients disperse in aqueous solutions
  • A water-dispersible polymer that contains a sulfonate group
  • Assists in controlling the viscosity of formulas

Polyester-5 description

Polyester-5 functions as a film-forming and emulsifying agent, as well as a thickener, in skin care products. It assists in creating stable skin care textures and emulsions. It’s known to form a clear, flexible film on skin and can aid the dispersion of different types of ingredients in a cosmetic formula. It is used up to 30% concentration, depending on formulary needs and aesthetic goals.

Polyester-5 references

  • Prospector, Accessed June 2022, ePublication.

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.