Peg-30 Stearate


Cleansing Agent

No known benefits

Peg-30 Stearate at a glance

  • Made from polyethylene glycol and stearic acid
  • Has cleansing, emulsifying, suspending, and solubolizing properties
  • May be animal-derived or synthetic
  • Considered safe as used in cosmetics
  • Among the lesser-used PEG compounds

Peg-30 Stearate description

PEG-30 stearate is a blend of the binding and stabilizing ingredient polyethylene glycol and the fatty acid stearic acid. It has cleansing, suspending, emulsifying and solubolizing properties when used in cosmetics, all of which help other cosmetic ingredients work better. Interestingly, PEG-30 stearate is among the least used PEG compounds. PEG-100 stearate is far more common, with the “100” referring to the molecular weight of the ingredient. So, for example, PEG 30 stearate weighs less than PEG-100 stearate. This ingredient may be animal-derived or synthetic, and is considered safe as used in cosmetics, although standard use levels have not been firmly established (safety data on some PEG compounds examined concentrations up to 100% and found no cause for concern).

Peg-30 Stearate references

  • Toxicological Research, June 2015, pages 105–136
  • UL Prospector, Accessed August 2023
  • SpecialChem, Accessed August 2023

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.