Polyamide-8
Reviewed by Rosie · Last updated 18 Aug 2026
Also known as: Stearyl Alcohol, Linoleic Acid
A synthetic polymer made from multiple ingredients | Serves as an emollient, occlusive, film-former, and binding agent
Addresses
EWG Safety Score
What Is Polyamide-8?
Polyamide-8 is a synthetic polymer made from the plasticizing solvent neopentyl glycol, the benign fatty alcohol stearyl alcohol, and naturally-derived hydrogenated dilinoleic acid. The blend produces a new ingredient that offers emollient, binding, and film-forming properties.
Polyamide-8 is often used in sunscreens, lipsticks, lip glosses, and eyeshadows due to its water- and transfer-resistant properties which improve wear time. It is compatible with a wide range of oils, where it helps provide better structure.
The molecular weight of this ingredient prohibits penetration into skin. Usage levels of polyamide-8 range from 1-10%, though lower amounts may be used depending on the intended results. It is considered safe as used in cosmetics.
Clinical Evidence & References
Published Research
-
ACS Applied Materials and Interfaces, November 2015, pages 82-93 [URL not found]
-
Biomacromolecules, November 2015, pages 3,491-3,498 [https://pubs.acs.org/doi/10.1021/acs.biomac.5b00977]
-
https://cosmetics.specialchem.com/product/i-croda-oleocraft-lp-20 [https://cosmetics.specialchem.com/product/i-croda-oleocraft-lp-20]
Frequently Asked Questions
From the Clinic
Not sure what your skin actually needs?
Two minutes, a few questions, and we’ll point you at what matters — no guesswork.
Take the skin quizRelated Ingredients
Physavie
Amazonian botanical for skin regeneration and protection
Phytosteryl Macadamiate
An ester of phytoesterols and the fatty acids found in macadamia seed oil | Gives skin emollient, skin-softening properties
Platinum Powder
A finely milled mineral powder with gentle exfoliating and skin conditioning properties
Polyethylene
Polyethylene is a synthetic polymer whose many uses in cosmetics
Polyglucuronic Acid
Plant-derived or synthetic polysaccharide ingredient | Serves as a film-forming agent and has humectant properties
Polyglyceryl-10 Stearate
Ester of stearic acid with a glycerin polymer | Functions as a skin-softening, emollient ingredient
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.