REDKEN Extreme Length Shampoo with Biotin is a length-strengthening shampoo that fortifies hair and reduces breakage, helping clients achieve their maximum hair length. Enriched with biotin, it minimizes split ends and promotes healthy growth—potentially up to 6 inches in a year—while maintaining hair health during coloring or bleaching. This shampoo supports stronger, longer, and more resilient hair with every wash.
 
1L