The Redken Extreme 300mL Duo is a professional-strength haircare system designed to reinforce and protect damaged hair while promoting healthy length. Infused with Biotin, Castor Oil, and Redken’s Length Care Complex, this powerful duo strengthens fragile strands and reduces breakage for longer, healthier-looking hair. The shampoo gently cleanses while the conditioner provides lightweight nourishment, leaving hair fortified, smooth, and resilient. Sulfate-free Infused with Biotin and Castor Oil Reduces breakage by 81% Kit includes: 1 x 300mL Extreme Shampoo 1 x 300mL Extreme Conditioner Who is it for? Those looking to grow longer, stronger hair What does it do? Reinforces and strengthens damaged hair Helps prevent breakage and split ends Gently cleanses and conditions Promotes long, healthy hair growth How do you use it? Shampoo : Apply to wet hair. Massage into lather. Rinse thoroughly Conditioner : After shampooing, apply and distribute through hair. Rinse thoroughly