Sebastian Thickefy Foam Volumising Mousse 200mlSebastian Professional is a brand of professional hair products, created by a stylist duo from Los Angeles Geri Cusenza and John Sebastian. The brand has been inspired by the world of fashion from the very beginning. Sebastian products make it possible create your own individual image. The company has been innovating and surprising its users for 40 years. The brands portfolio features high quality hair care, styling and colour treatment products..