Cited skincare — every flag names its source, no upsell.
De

Decylene Glycol

Decylene GlycolHydrator

A glycol that dissolves other ingredients, softens skin and helps the preservatives work.

What it does

A glycol that dissolves other ingredients, softens skin and helps the preservatives work, sometimes in place of stronger preservatives.

The evidence, graded

expert consensusUS safety reviewers (2012) assessed the 1,2-glycols, which products use mostly to condition skin and hair and to adjust thickness. Their index lists 1,2-hexanediol and decylene glycol under that report. The reviewers noted that these glycols are absorbed through skin, and judged them safe as used.Johnson 2012 · 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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