Schwarzkopf Professional OSiS+ Glow Frizz Control & Shine Serum is a lightweight, non-greasy hair serum designed to instantly boost shine and tame frizz. Enriched with shea butter, this professional styling serum smooths flyaways, fights static, and enhances manageability without weighing hair down. Ideal for straight, wavy, curly, and chemically treated hair, it provides humidity protection and a glossy finish. Perfect for dull, dry, or frizzy hair, this salon-grade shine serum nourishes strands, adds softness, and delivers long-lasting smoothness for a polished, radiant look every day.