Isostearyl Neopentanoate



Isostearyl Neopentanoate at a glance

  • Ester of isostearyl alcohol and neopentanoic acid
  • Functions as emollient to lend lubricity, spreadability, and moisture retention
  • May be used as a solvent for certain UV absorbers
  • Can also be used as a binding agent for pressed powder makeup
  • Clear, slightly yellow liquid in raw material form

Isostearyl Neopentanoate description

Isostearyl neopentanoate is the ester of the fatty alcohol isostearyl alcohol and the carboxylic acid neopentanoic acid. Its listed cosmetic functions include emollient and binding agent. It can also function as a solvent for certain UV absorbers. Isostearyl neopentanoate is noted in research for contributing lubricity and helping skin care formulations, such as moisturizers and sunscreens, spread more easily. Another benefit is that it helps skin retain moisture but doesn’t add a greasy feel. In its role as a binding agent, isostearyl neopentanoate can help hold pressed powder makeup (such as eye shadow, blush, etc.) together without losing the powder-like texture. Isostearyl neopentanoate is a clear, slightly yellow liquid in raw material form. The Cosmetic Ingredient Review Expert Panel 2015 assessment of isostearyl neopentanoate deemed it is safe in the practices of use/concentrations (up to 50%) described in their report. It may be animal-derived or synthetic.

Isostearyl Neopentanoate references

  •, Accessed December 2022, ePublication
  • International Journal of Toxicology, 2015, page 5S-69S
  • Handbook of Cosmetic Science and Technology, 2001, page 153

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.


We couldn't find this in our ingredient dictionary. We log all missing ingredients and make continuous updates.

Not Rated