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Redken Extreme Length

Redken Extreme Length Sealer Leave-in Treatment 150ml

13 Reviews
£16.95 £21.75 (23% off)
Redken Extreme Length Sealer Leave-in Treatment 150ml
Redken Extreme Length Sealer Leave-in Treatment 150ml
Redken Extreme Length Sealer Leave-in Treatment 150ml
Redken Extreme Length Sealer Leave-in Treatment 150mlRedken Extreme Length Sealer Leave-in Treatment 150mlRedken Extreme Length Sealer Leave-in Treatment 150ml
Sold by Beyond Beautiful
£3.00 delivery, free over £40.
Get Fri 1 Jul - Wed 6 Jul
Fastest delivery Thu 30 Jun.
Order within 11 hrs, 56 mins
Hurry, only 4 left in stock!
  • In Stock
  • 30 Day Returns
  • Fast Delivery Options
Compare prices from 4 more retailers
  • £18.00 + £1.99 delivery From Beauty Flash
  • £18.63 + £3.50 delivery From Cloud10Beauty
  • £21.75 Free delivery From Gorgeous Shop
  • £21.60 Free delivery From Look Fantastic

Product Description

Discover the nourishing Redken Extreme Length Sealer Leave-in Treatment. This solution is part of the Extreme Length range which targets tresses prone to damage and breakages.

Whether you want to nourish your long locks or encourage your short strands to grow, this treatment is a must in your bathroom cabinet. It contains a reparative formula which helps reduce breakages by an impressive 81% and minimise the appearance of split ends by 78%. This seal and strengthens the hair fibres to keep your mane in a healthy condition to ensure optimal hair growth.

Formulated with hair-loving biotin and soy protein, this leave-in treatment is designed to fortify and moisturise each strand. This means your hair feels smoother, softer and shinier for more manageable results.

Start with the Redken Extreme Length Shampoo. Take a look at the Redken Extreme Length Conditioner too.

Rebecca Jenkinson

Written by Rebecca Jenkinson, Beauty Writer

Product Details

Hair Type: Formulated for all hair types

Hair Benefit: Shine, smoothing, strengthening and hydrating

Hair Concern: Dry, damaged, split ends, weak, brittle and dullness

Ingredient Highlights: Contains ahas, biotin, ceramide, citric acid, glycerin and vitamin b.

Ingredient Features

If you're looking to strengthen the hair shaft and to lock nutrients in then the ceramide contained in this leave in conditioner provides the perfect solution. The vitamin b in this item will also work to add moisture to dry hair and to improve scalp health.

  • AHAs
  • Glycerin
  • Citric Acid
  • Ceramide
  • Vitamin B
  • Biotin

Redken says

"Redken Extreme Length Leave-In Conditioner with Redken's Length Care Complex made with Biotin and Soy Protein helps hair growth by strengthening damaged hair to grow longer and stronger. Extreme Length Leave-In Conditioner also helps prevent hair breakage."

How To Use

  1. Start with shampooed and conditioned towel-dried hair
  2. Take a generous amount of cream
  3. Smooth over mid-lengths to ends
  4. Leave in, do not rinse out
  5. Style as usual

Brand Bio

Protect and strengthen your strands with the Redken Extreme Length collection. This subsection of the Extreme range targets hair growth to help prevent breakages and split ends. It contains a nourishing remedy to smooth and nourish every strand for longer, luscious results. Shop the range at Cosmetify today. 


Based on 13 reviews from Look Fantastic, this Redken leave in conditioner is rated 4.4 out of 5. Product review scores are combined across retailers and an average is calculated. Visit the website of the retailer to read review content.

Delivery & Returns

Products over £40.00 qualify for free standard delivery with Beyond Beautiful, otherwise there is a charge of £3.00 with orders usually arriving within 1-5 days of dispatch. Express/Next day delivery option available. Shipping available to UK addresses only.

The returns policy for this retailer is around 30 days, see their website for further information.

More from Redken Extreme Length

Other Redken Ranges

  • Redken All Soft
  • Redken Extreme
  • Redken Frizz Dismiss
  • Redken Colour Extend
  • Redken Brews
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Redken Extreme Length Sealer Leave-in Treatment 150ml
Redken Extreme Length
Sealer Leave-in Treatment