Redken Extreme Length Conditioner for Damaged Hair — 33.8 fl oz, Biotin & Castor Oil Strengthening and Detangling

Redken Extreme Length Conditioner is a strengthening, biotin- and castor-oil–infused conditioner designed to detangle, fortify damaged hair, and support longer, healthier-looking strands.

Designed as part of Redken’s Extreme Length system, this salon-grade conditioner blends biotin and castor oil to help reduce breakage and minimize the appearance of split ends while leaving hair smoother and more manageable. Use it with Extreme Length Shampoo and the Sealer Leave-In Treatment for best results; the formula focuses on reinforcing strands from root to tip so hair can grow with less snapping and friction.

How does this conditioner help hair grow longer?

The formula supports length retention by strengthening fragile areas along the hair shaft to reduce breakage—meaning you keep more of the hair you grow. Ingredients like biotin and castor oil work together to reinforce the fiber and improve resilience during everyday styling.

• Biotin strengthens hair structure and supports resilience.
• Castor oil adds lubrication and shine to reduce friction-related damage.
• Lightweight conditioning helps detangle without weighing hair down.
• Designed to be used in a three-step Extreme Length regimen for optimal results.

Will it help damaged or chemically treated hair?

Yes — the conditioner is formulated to target weakened, over-processed, or breakage-prone hair by delivering fortifying actives and conditioning agents. It smooths and nourishes the cuticle, making strands easier to comb and less likely to snap when wet or styled.

• Helps visibly reduce split ends when used as directed with other Extreme Length products.
• Provides lightweight moisture to prevent further damage from heat and styling.
• Safe for color-treated hair when used as part of a professional routine.
• Improves comb-through ease, reducing mechanical breakage from brushing.

How should I use the conditioner for the best outcome?

Apply after shampooing: distribute evenly through mid-lengths to ends, leave on a minute or two, then rinse thoroughly. For a complete approach, pair it with the Extreme Length Shampoo and finish with the Sealer Leave-In Treatment to lock in strength and manageability.

• Use regularly—every wash—for consistent strengthening benefits.
• Concentrate product on ends and any fragile areas.
• Combine with leave-in Sealer for added split-end reduction and protection.
• Follow with heat protection before styling to preserve results.

What results can I realistically expect and when?

When used as part of the Extreme Length system, many users experience less breakage and smoother hair within weeks, and improved length retention over months. Results depend on hair condition, consistency of use, and styling habits, but the formula targets the two main obstacles to growth: breakage and split ends.

• Noticeable detangling and smoother texture after the first use.
• Reduced split-end appearance with continued system use.
• Less breakage during brushing and styling over time.
• Supports reaching greater length by helping you retain the hair you grow.

Who is this for: Redken Extreme Length Conditioner suits anyone aiming to grow and keep longer hair—especially those with damaged, chemically treated, or breakage-prone strands. It works for all hair textures that need strengthening without heavy buildup, and it pairs well with professional routines for people who style frequently or seek salon-quality maintenance at home.

Ingredients

AQUA / WATER / EAU</div><div>CETEARYL ALCOHOL</div><div>PROPYLENE GLYCOL</div><div>MALEIC ACID</div><div>ETHANOLAMINE</div><div>BEHENTRIMONIUM METHOSULFATE</div><div>PARFUM / FRAGRANCE</div><div>STEARAMIDOPROPYL DIMETHYLAMINE</div><div>GLYCERIN</div><div>PHENOXYETHANOL</div><div>HYDROXYETHYLCELLULOSE</div><div>RICINUS COMMUNIS SEED OIL / CASTOR SEED OIL</div><div>QUATERNIUM-91</div><div>POLYQUATERNIUM-37</div><div>BENZOIC ACID</div><div>PARAFFINUM LIQUIDUM / MINERAL OIL / HUILE MINERALE</div><div>CETRIMONIUM CHLORIDE</div><div>CETRIMONIUM METHOSULFATE</div><div>PPG-1 TRIDECETH-6</div><div>BENZYL BENZOATE</div><div>BIOTIN</div><div>LIMONENE</div><div>BENZYL ALCOHOL</div><div>ACRYLATES COPOLYMER</div><div>LINALOOL</div><div>2-OLEAMIDO-1,3-OCTADECANEDIOL</div><div>SORBITAN OLEATE</div>