A glycol ether, listed as a humectant, solvent and viscosity-controlling ingredient.
What it is
Propylene glycol butyl ether is 1-butoxypropan-2-ol, the monobutyl ether of propylene glycol, a colourless liquid glycol ether. CosIng lists it as a humectant, solvent and viscosity-controlling ingredient.
Where it is used
Appears on the ingredient lists of a small number of products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
Functions
- Humectant
- Retaining and/or preserving the moisture in a product during use.
- Solvent
- Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).
- Viscosity controlling
- Increasing or decreasing the viscosity (thickness) of cosmetics.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.