Description:
Kostol STMS #529 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. In laboratory testing, hair swatches treated with the below shampoo showed a significant improvement in hair feel and appearance (vs. control (non-conditioning) shampoo).
A formulation by Koster Keunen.