Bosley Volume Volumizing & Thickening Nourishing Leave-In is an alcohol free nourishing leave-in and thermal protectant, that also creates thickness and volume. What it does: Creates noticeable body and volume, with hydrolyzed vegetable protein that help to detangle while giving smoother, shinier hair. LifeXtend Complex may support healthy hair function. ColorKeeper helps protect & extend color. Humidity and heat resistant, with thermal-styling protection. Key ingredients: LifeXtend Complex: Hydrates and nourishes while strengthening and fortifying the follicles and hair shaft for thicker, fuller looking hair. ColorKeeper: Helps protect and extend longevity of hair color. Humidity & Heat Resistant: Protects from high heat and humidity.