Isopentyldiol ●
TL;DR. This ingredient is a multifunctional solvent and humectant that helps dissolve actives, improve skin feel, and support water retention. It can also help preservative systems perform more efficiently by reducing the water activity of a formula.
What does Isopentyldiol do in a cosmetic formula?
This ingredient is a multifunctional solvent and humectant that helps dissolve actives, improve skin feel, and support water retention. It can also help preservative systems perform more efficiently by reducing the water activity of a formula.
Is Isopentyldiol clean?
From a clean-beauty perspective, this ingredient is generally viewed as low-irritation and not a common allergen or sensitizer. The main friction is not skin safety, but whether a specific grade meets natural-origin and processing requirements used by stricter clean standards.
Is Isopentyldiol sustainable?
This material is commonly synthetic, with sourcing that may be petrochemical unless a supplier documents a renewable route. It is a small water-soluble diol and is expected to have a more favorable biodegradation profile than persistent silicone or fluorinated materials.
Is Isopentyldiol COSMOS-approved?
This ingredient is not automatically aligned with COSMOS-organic or COSMOS-natural, and common synthetic grades may not qualify without supplier-specific approval. Its Green Chemistry profile depends on feedstock and manufacturing route, with better alignment when made from renewable inputs and processed with lower-impact chemistry.
How does Isopentyldiol work chemically?
The molecule is a small branched C5 diol, meaning it carries two hydroxyl groups that give it strong water compatibility and solvent behavior. It is typically used in the low single digits to about 5% for humectancy and solubilization, is broadly pH-stable in normal cosmetic ranges, and can support preservation by lowering available water.
Last updated 2026-05-13