Isobutane ●
TL;DR. This ingredient is used primarily as an aerosol propellant, creating pressure that dispenses sprays, foams, and mousses. It evaporates quickly after release, helping products feel dry and residue-light.
What does Isobutane do in a cosmetic formula?
This ingredient is used primarily as an aerosol propellant, creating pressure that dispenses sprays, foams, and mousses. It evaporates quickly after release, helping products feel dry and residue-light.
Is Isobutane clean?
Clean-beauty friction is mainly about aerosol format, flammability labeling, petroleum origin, and VOC status rather than routine skin irritation. Many clean standards flag or limit this class of propellant, especially in leave-on spray products where inhalation exposure is part of use.
Is Isobutane sustainable?
This material is typically sourced from fossil gas or petroleum refining streams. It is not expected to bioaccumulate and breaks down in air, but it is a volatile organic compound that can contribute to ground-level ozone formation.
Is Isobutane COSMOS-approved?
This ingredient is not aligned with COSMOS natural or organic standards because it is a synthetic petrochemical aerosol propellant rather than an allowed natural-origin raw material or permitted processing aid. From a Green Chemistry view, its quick evaporation and low residue are formulation advantages, but fossil sourcing and VOC emissions are clear compromises.
How does Isobutane work chemically?
The molecule is a small, branched C4 alkane gas that liquefies under pressure, which is why it can generate consistent aerosol pressure in sealed packaging. It is chemically stable in the can, highly volatile at room temperature, and is usually blended with other propellant gases to tune spray force, evaporation rate, and foam structure.
Last updated 2026-05-13