Al
Allantoin
Allantoin
A conditioning ingredient common in sensitive-skin and post-procedure creams. Whether it calms or hydrates hasn’t been tested.
What it does
It’s a small molecule found in some plants and made for skincare, where it’s used to condition skin. It’s in over 1,300 products and common in creams for sensitive skin and for after procedures, but whether it calms, hydrates or speeds skin renewal hasn’t been tested.
The evidence, graded
expert consensusAllantoin was reported in 1,376 cosmetic products, at up to 2%. US safety reviewers found the safety data enough to support its use at those amounts. Its job in a formula is to condition skin.Becker 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.
Pairs worth knowing
Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.
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