Aloe-infused hair tonic provides intense moisture Protects hair from environmental damage Ideal for fine, dry hair, and safe for color-treated hair Say goodbye to frizz, flyaways, and dull, dry hair. The unique, nature-inspired formula of Biolage Hydrasource Daily Leave-In Tonic provides intensive hydration to quench even the most dry, damaged hair. See immediate results as it gives hair up to 15 times more moisture after just one use. Perfect for fine-to-medium hair types, this extra-conditioning tonic is simple to use. Just spray the mist lightly throughout damp hair, and style as usual for supple, smooth, shiny hair.