OSiS is one of the brands brought to Beauty Bay by hair giant Schwarzkopf. The range has been recently updated and now OSiS hair products are better than ever. If you're looking for haircare products to create inspirational hair and add energy and creativity to your style, OSiS is the range for you. Already an OSiS fan? Don't worry; hair care best-sellers such OSiS Dust It and OSiS Mess Up Matt Gum have been kept.