Redken Extreme Length Shampoo is designed to help you achieve longer, stronger hair. This professional formula with biotin and castor oil cleanses the hair while helping to reduce breakage and split ends, promoting healthy hair growth. Ideal for those looking to grow their hair out, this shampoo strengthens strands from root to tip, making it more resilient. It gently cleanses without stripping essential moisture, leaving hair feeling soft, manageable, and ready to grow.