Nous Haircare x REVOLVE It Girl Conditioner in Beauty: NA. All you've ever wanted was everything? The it girl conditioner is made with power house ingredients such as niacinamide and silk proteins to deeply hydrate, enhance elasticity, and strengthen each strand of hair all while keeping it weightless and bouncy so it feels as good as it looks. Again, she's the it girl for a reason.. Vegan and cruelty-free Free of parabens and sulfates. Niacinamide is a powerhouse vitamin B3 component that is celebrated for its ability to improve hair's resilience, enhance texture, and reduce inflammation. Hydrolyzed silk protein and avocado oil are ingredients that deliver deep hydration and significant strength to each strand, preventing breakage and promoting elasticity, leaving your curls soft, supple, and resilient. 10 fl oz. Apply after shampooing, rinse.. NOUR-WU7. 7.