Ingredient
Isopentyldiol
3-Methyl-1,3-butanediol
What it is
A synthetic branched-chain diol used as a multifunctional ingredient in place of, or alongside, glycols such as butylene glycol or propanediol.
How it works
Functions as a humectant that helps bind water at the skin surface while also acting as a solvent that dissolves other formula ingredients and can support preservative efficacy.
What it does
Humectant
Solvent
Concerns to know
-
Well tolerated
No significant safety concern is reported for this ingredient as used in cosmetics.