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Redken Extreme Length Sealer Treatment

1 total reviews

$35.95 CAD
$35.95 CAD
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Extreme Length Sealer is a leave-in treatment built around Redken's Length Care Complex, featuring Biotin and Hydrolyzed Soy Protein, formulated to fortify hair from root to tip and target split ends. Biotin (Vitamin B7) is included to help promote longer, healthier-looking hair, while Soy Protein helps strengthen and repair damaged strands.

Amodimethicone and Polyquaternium-37 smooth the cuticle for weightless conditioning, reducing friction from brushing to help prevent further breakage. Arginine and Sweet Almond Oil round out the formula, adding manageability, smoothness, and shine.

When used as a full system with Extreme Length Shampoo and Conditioner, this sealer visibly reduces the appearance of split ends by 78%, applied to clean, damp, towel-dried hair and left in without rinsing.

Hair Texture: Straight, Wavy, Curly, Coily
Hair Type: Fine, Medium, Thick

What It Is

Extreme Length Sealer Treatment — a leave-in treatment that visibly reduces the appearance of split ends. Biotin-formulated for stronger length retention.

Hair Concerns

  • Split end appearance reduction
  • Daily length-retention leave-in
  • Smoothness + manageability
  • Continued Length Care system

Key Benefits

  • 78% reduction in appearance of split ends with full system (vs untreated)
  • Biotin-formulated leave-in for stronger longer hair
  • Daily-use leave-in that adds manageability + smoothness + shine

Highlighted Ingredients

  • Biotin (Vitamin B7) — promotes longer, healthier-looking hair
  • Length Care Complex — Redken's length-fortifying technology
Leave-in Split end sealer Salon-exclusive

What Else You Need to Know

The leave-in step in the Extreme Length routine. Apply to clean towel-dried hair before styling.

Fragrance

Extreme Length signature scent.

How to Use

Apply to clean damp towel-dried hair. Leave-in. Style as desired.

FAQ

Do I rinse out Extreme Length Sealer?

No, it's a leave-in treatment. Apply to clean, damp, towel-dried hair and style as desired.

How effective is this sealer at reducing split ends?

When used as a full system with Extreme Length Shampoo and Conditioner, it visibly reduces the appearance of split ends by 78%.

What is Redken's Length Care Complex?

A fortifying complex built around Biotin, a B-vitamin known for promoting longer, healthier-looking hair, paired with Soy Protein.

Authorized Redken retailer · Zennkai Canada since 1984 · Salon-exclusive professional formulations · Protein. pH. Hair Science.