Is
Isopentyldiol
IsopentyldiolHydrator
A glycol that dissolves other ingredients and holds water at the surface — also boosts the preservative system.
The evidence, graded
expert consensusUS safety reviewers assessed 10 small alkane diols, most used in products to dissolve other ingredients. They judged seven safe as used, methylpropanediol and isopentyldiol among them; for three others they had too little data. The report was finished in 2018 and published in 2024.Scott 2024 · 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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