Methylpropanediol ●
TL;DR. This ingredient primarily functions as a solvent and humectant, helping dissolve actives, improve formula feel, and support preservative performance in water-based products.
What does Methylpropanediol do in a cosmetic formula?
This ingredient primarily functions as a solvent and humectant, helping dissolve actives, improve formula feel, and support preservative performance in water-based products.
Is Methylpropanediol clean?
It is generally accepted in many clean-beauty frameworks because it has low sensitization potential and no major restricted-list profile. The main clean-standard friction is that it is usually synthetic and can increase transient stinging in some leave-on formulas at higher levels.
Is Methylpropanediol sustainable?
This material is typically made from petrochemical feedstocks, so its sourcing is less aligned with renewable-ingredient preferences. It is water-soluble, readily biodegradable, and not expected to bioaccumulate.
Is Methylpropanediol COSMOS-approved?
It is generally not permitted in COSMOS-natural or COSMOS-organic formulas because it is a synthetic solvent outside the standard’s preferred allowed-material categories. From a Green Chemistry lens, it scores better on biodegradability and low persistence than on renewable sourcing.
How does Methylpropanediol work chemically?
The molecule is a small, branched diol with two hydroxyl groups, giving it strong water miscibility and useful solvency for polar and semi-polar ingredients. Typical use is often about 1-10% in water-based formulas, with broad pH stability and good compatibility with many preservative systems.
Last updated 2026-05-14