
For those struggling to grow hair beyond a certain length, the primary culprit is often not a lack of growth, but an excess of breakage. Brittleness, environmental stress, and chemical processing can compromise the hair shaft, leading to split ends that keep your hair from reaching its true potential. Redken Extreme Length Biotin Shampoo is a professional-grade solution designed to address these challenges at the follicular and structural levels. By fortifying the hair fiber with essential nutrients, this shampoo creates an optimal environment for growth, allowing you to achieve longer, stronger hair that stands up to daily styling and environmental stressors.
The Science of Fiber Fortification
Redken’s sophisticated formula works by reinforcing the hair fiber from root to tip. The synergy between high-potency Biotin and conditioning Castor Oil creates a protective shield that minimizes structural damage during the growth cycle.
Biotin (Vitamin B7): A critical nutrient that strengthens the hair cuticle and supports the natural resilience of the hair shaft, directly combatting the brittle texture that leads to breakage.
Castor Oil: Rich in fatty acids, castor oil provides essential moisture to the scalp, promoting a healthy environment for hair follicles while smoothing the surface of each strand to prevent snapping and tangling.
Strengthening Technology: This shampoo utilizes advanced conditioning polymers that fill in damaged areas of the hair cuticle, effectively “sealing” the strand to prevent further moisture loss and structural degradation.
Key Benefits of Redken Extreme Length
- Breakage Reduction: Clinical studies show a significant reduction in hair breakage, allowing for improved length retention.
- Structural Integrity: Fortifies damaged hair strands, making them more resistant to thermal styling and daily environmental damage.
- Enhanced Growth Support: Creates the optimal scalp environment for hair to grow longer without reaching a “breaking point.”
- Professional Results: Developed in salon-exclusive laboratories to deliver visible health, shine, and manageability.
- All-Type Compatibility: Whether your hair is color-treated, bleached, or natural, this formula works to restore health and prevent future snapping.
Explore our full range of Professional Hair Care solutions here.

Usage Guide
Apply to wet hair, massage into a rich lather, and rinse thoroughly. For best results, follow with the Redken Extreme Length Conditioner and Leave-In Treatment. This system is designed to work in synergy, with each product building upon the strengthening effects of the last. Use consistently during every wash to maintain the protective barrier against daily hair breakage.




















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