This wonderful preparation combines solvent-like properties with a mild emulsifier to penetrate the hair follicles. It also softens thick sebum build-up and draw it out onto the surface of the scalp so it can be removed in the second step. You will find that the Professional Scalp Prep cuts through the toughest build-up from hair spray, gel, pomade or any other hair styling product. With continued use, follicles become healthier so they can grow naturally.