Redken Extreme Length Leave-In Treatment
- Leave-in sealer for split ends
- Biotin and soy protein
- Length Care Complex
- Reduces brushing friction
- Dry, damaged hair
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A leave-in sealer with biotin and soy protein that smooths the cuticle and reduces breakage on hair you are growing out. It does not make hair grow faster on its own.
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ASIN: B086L3RLVMCategory: Hair Conditioners
Overview
A bathroom routine for someone growing out long hair is where Redken Extreme Length Sealer fits. It smooths the cuticle, seals split ends and reduces brushing friction with biotin and soy protein.
Less breakage means more length kept, which is the real way this product supports growth. The listing gives no size, scent or directions.
Who it's for
Growing-out hair with split ends and breakage fits this leave-in. People wanting faster root growth need a scalp treatment.
Pros and cons
- Seals split ends
- Biotin and soy protein
- Reduces brushing friction
- Adds shine and smoothness
- Size not listed
- No directions given
- Does not grow hair from the root
Performance notes
Proteins fill weak spots along the strand and smooth the cuticle, which lowers friction when brushing. Less friction and sealed ends mean fewer breaks, so hair holds its length.
Specifications
| Brand | Redken |
|---|---|
| Hair Type | Dry, damaged |
| Hair Conditioner Type | Leave-in treatment |
| Product Benefits | Seals split ends, prevents breakage, adds shine |
| Special Ingredients | Biotin, Soy Protein, Length Care Complex |
Frequently asked questions
Will Redken Extreme Length make hair grow faster?
It supports growth by reducing breakage and sealing split ends. It is a leave-in for the lengths, not a scalp treatment.
What is in Redken Extreme Length Sealer?
Redken's Length Care Complex with biotin and soy protein.
Is Redken Extreme Length Sealer rinsed out?
No. It is a leave-in treatment.
Does Redken Extreme Length help split ends?
Yes. It is described as sealing split ends and preventing breakage.