Hair Care: Sulfate Free Color Care* Conditioning Shampoo II by Koster Keunen
Kostol STMC #823 is a high performing emulsifier, hair and skin conditioner, and foam booster, making it the perfect choice for conditioning shampoos, and all other hair care applications, especially where a “sulfate-free” claim is needed.
A formulation by Koster Keunen.
* Tested on color treated hair swatches vs. a leading sulfate free color care salon brand.