strong-hold gloss spray. Schwarzkopf Professional's Osis+ Soft Glam Strong Glossy Holdspray is a strong hold, non-sticky fixation spray that's ideal for creating big, glossy hair that lasts all night. Mineral enrichment gives the formula a beautiful sheen and a smooth texture. In addition to being an excellent finishing spray, hair spray can be applied directly to the roots of hair to increase fullness and volume from root to tip. Its grip is robust yet adaptable.