Redken Extreme Length Sealer with biotin builds strength from root to tip and targets split ends. Extreme Length system of Shampoo, Primer and Sealer can help you achieve your maximum hair length.

Product benefits:
- Formulated with biotin.
- Provides weightless conditioning.
- Exclusive Interlock Protein Network strengthens hair.
- Easy application: use the exclusive built-in-brush to seal split ends.