Hy
Hydrogenated Castor Oil
Hydrogenated Castor OilBarrier
Castor oil turned into a hard wax — thickens balms and sticks and gives them structure and a smooth glide.
What it does
Castor oil that’s been treated with hydrogen to turn it from a liquid into a hard wax. It thickens oils, gives sticks and balms their structure, helps keep other ingredients suspended, and adds a smooth, cushioned glide.
The evidence, graded
expert consensusUS safety reviewers first judged castor oil and related ingredients, hydrogenated castor oil among them, safe as used in 2007. They say these mainly condition skin, keep creams stable and help oil and water mix. Looking again in 2025, they kept that verdict. Its top reported use was 21%, in eyebrow pencils. Several case reports describe people who tested allergic to it or to castor oil.Fiume 2025 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.
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