Di
Dilauryl Thiodipropionate
Dilauryl ThiodipropionateAntioxidant
An antioxidant that protects the formula. Little research tests what it does on skin.
What it does
It’s a sulfur-containing ester listed as an antioxidant: it protects a product’s oils from going off. In one test, a 4% face product left some users with mild redness.
The EU’s ingredient database lists it as an antioxidant (slows reactions with oxygen, like going rancid).European Commission, CosIng (© European Union, CC BY 4.0) · uses put in plain words by Drop ↗
The evidence, graded
expert consensusUS safety reviewers (2010) judged dilauryl thiodipropionate and related esters safe in products made not to irritate. It’s listed as an antioxidant. In people it caused some irritation but no allergy or sun reactions: of 55 women who used a face product with 4% twice a day for 28 days, 16 had mild or very slight redness throughout. It didn’t irritate animal skin or eyes and wasn’t an allergen in animal tests.Diamante 2010 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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