Redken Extreme Length Leave-In Treatment — Biotin Leave-In for Hair Growth, Seals Split Ends & Reduces Breakage
Redken Extreme Length Leave-In Treatment is a biotin- and soy-protein-infused leave-in that strengthens fragile hair, seals split ends, and helps...
Vendor:
Redken
Product type:
Conditioner
- $109.48
- $109.48
- Unit price
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$109.48
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Description
xRedken Extreme Length Leave-In Treatment is a biotin- and soy-protein-infused leave-in that strengthens fragile hair, seals split ends, and helps reduce breakage so strands can grow longer and healthier-looking.
Designed by the professional haircare brand Redken, this lightweight leave-in treatment is part of the Extreme Length system and targets weak, damaged hair. It combines Redken's Length Care Complex with biotin and soy protein to reinforce the hair fiber, smooth the cuticle, and improve manageability and shine without weighing hair down. Use it after washing or as a targeted repair step to reduce friction from brushing and support longer-looking hair.
How does this leave-in help hair resist breakage?
The formula strengthens hair along the root, core and tip to lower everyday breakage from styling and brushing. Protein and biotin work to fortify weakened areas while the sealer action smooths cuticle edges that lead to splits and snapping.
- Biotin and soy protein reinforce strand structure.
- Cuticle-smoothing ingredients reduce friction and tangling.
- Lightweight leave-in texture conditions without heaviness.
- Designed to integrate into a system for best results (shampoo, conditioner, treatment).
Will it actually reduce visible split ends and make hair longer?
While no topical product can fuse fully broken ends back together, this treatment seals and smooths split edges to reduce the appearance of split ends and help prevent new ones from forming. When used consistently as part of the Extreme Length regimen, it supports healthier hair surfaces so strands can retain length more effectively.
- Seals and smooths split ends for less visible fraying.
- Helps prevent future breakage that shortens hair length.
- Improves manageability so you can detangle with less stress on strands.
How should I use it for best results?
Apply to towel-dried hair after shampooing and conditioning, concentrating on mid-lengths and ends. Comb through to distribute, then style as usual; no need to rinse. For targeted repair, you can use a small amount on dry hair to tame flyaways and smooth split edges between washes.
- Use on damp hair after cleansing and conditioning.
- Work a quarter-sized amount through lengths and ends; comb to distribute.
- Style regularly—reapply sparingly on dry hair for touch-ups.
- Best combined with Extreme Length shampoo and conditioner for optimal reduction in breakage.
Is it suitable for my hair type and color-treated hair?
The leave-in is formulated for weak, damaged, or fragile hair but works on most hair types that need strengthening and split-end care. It is compatible with color-treated hair; however, always patch-test new products or consult your stylist if you have very porous or chemically treated hair.
- Safe for color-treated hair when used as directed.
- Lightweight enough for fine hair yet nourishing for thick, coarse textures.
- Suitable for chemically treated or heat-styled hair seeking repair support.
Who is this for? Redken Extreme Length Leave-In Treatment is made for anyone with fragile, damaged, or breakage-prone hair who wants to protect existing length and improve hair surface health. If you regularly heat-style, chemically process, or struggle with split ends and snapping strands, this treatment offers daily-strengthening and smoothing benefits as part of a regular care routine. Professional-grade and science-backed, it pairs best with the full Extreme Length system for cumulative results.
Ingredients
AQUA / WATER / EAU</div><div>AMODIMETHICONE</div><div>CETEARYL ALCOHOL</div><div>TRIDECETH-5</div><div>POLYQUATERNIUM-37</div><div>PHENOXYETHANOL</div><div>PROPYLENE GLYCOL DICAPRYLATE/DICAPRATE</div><div>STEARETH-20</div><div>PARFUM / FRAGRANCE</div><div>SODIUM HYDROXIDE</div><div>CITRIC ACID</div><div>GLYCERIN</div><div>PHENYL TRIMETHICONE</div><div>CETYL HYDROXYETHYLCELLULOSE</div><div>TRIDECETH-10</div><div>PPG-1 TRIDECETH-6</div><div>CETYL ALCOHOL</div><div>PRUNUS AMYGDALUS DULCIS OIL / SWEET ALMOND OIL</div><div>BIOTIN</div><div>POLYQUATERNIUM-67</div><div>ARGININE</div><div>BEHENTRIMONIUM METHOSULFATE</div><div>CHLORHEXIDINE DIGLUCONATE</div><div>QUATERNIUM-33</div><div>SORBITAN OLEATE</div><div>ACETIC ACID</div><div>BENZYL BENZOATE</div><div>2-OLEAMIDO-1,3-OCTADECANEDIOL</div><div>HYDROLYZED SOY PROTEIN</div><div>LIMONENE</div><div>BENZYL ALCOHOL</div><div>LINALOOL</div><div>SILICA DIMETHYL SILYLATE</div><div>HYDRATED SILICA</div><div>POLYSORBATE 60</div><div>HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL</div><div>SODIUM ACETATE</div><div>SODIUM CHLORIDE</div><div>ISOPROPYL ALCOHOL</div><div>POTASSIUM SORBATE</div>
FAQ
Q: How often should I use Redken Extreme Length Leave-In Treatment?
A: Use on towel-dried hair after every wash, or as needed on dry hair for smoothing. Regular use supports reduced breakage.
Q: Can I use it with color-treated hair?
A: Yes. The formula is compatible with color-treated hair, but patch-test first if hair is very porous or heavily processed.
Shipping & Return
xReturn Policy
We offer a 30-day return policy, which means you have 30 days after receiving your item to request a return. For Beauty & Personal Care items, returns are only accepted for products that arrive damaged, defective, incorrectly shipped, or in a condition that is the fault of the seller.
To be eligible for a return, your item must be in the same condition that you received it — unopened, unused, with all original packaging, safety seals intact, and all included accessories. For hygiene and safety reasons, opened or used beauty, skincare, haircare, fragrance, makeup, nail, tattooing, and personal care items cannot be returned.
You will also need your receipt or proof of purchase.
To start a return, contact us at cevraaustralia@gmail.com
All approved returns must be sent to the following address:
Cerva Australia – Returns Department
2601 E 28th St, STE 005
Signal Hill, California
United States
If your return is accepted, you will receive a prepaid return shipping label (when applicable) along with detailed instructions on how and where to send your package. Items sent back without first requesting a return will not be accepted.
You can always reach us at cevraaustralia@gmail.com for any return questions.
Damages and Issues
Please inspect your order upon delivery and contact us immediately if your item is damaged, defective, incorrect, leaking, broken, or arrives with missing components. We will evaluate the issue and make it right.
For seller-caused issues (damaged, defective, incorrect, expired), Cerva Australia will cover the return shipping cost.
Exceptions / Non-Returnable Items
For safety and hygiene reasons, the following items cannot be returned:
- Opened or used Beauty & Personal Care products
- Skincare, hair care, makeup, fragrance, and personal care items with broken seals
- Bath & Body products that have been opened
- Makeup, lip care, mascaras, brushes, or sponges once used
- Tattooing supplies that have been opened or contaminated
- Salon & spa tools that show signs of use
- Perishable beauty goods
- Customized or personalized items
- Hazardous materials or flammable liquids
- Sale or clearance items
- Gift cards
If you are unsure about your item’s return eligibility, please contact us before sending it back.
Exchanges
Exchanges are only available for unopened items that arrived damaged, defective, incorrect, or expired. The fastest way to receive the item you want is to return the original (if eligible) and place a new order once your return is approved.
European Union 14-Day Cooling-Off Period
If your order is shipped into the European Union, you have 14 days to cancel or return the item for any reason. However, Beauty & Personal Care items must still be unopened, unused, with all seals intact, and in their original packaging.
Refunds
Once we receive and inspect your return, we will notify you whether the refund was approved. If approved, your refund will be processed to your original payment method within 10 business days. Please note that your bank or credit card provider may require additional time to process and post the refund.
If more than 15 business days have passed since your refund was approved, please contact us at cevraaustralia@gmail.com
ORDER PROCESSING TIME
All orders are processed within 2–3 business days after payment confirmation. Orders placed on weekends or Australia public holidays will be processed on the next business day.
If there is any delay in preparing your order, we will notify you promptly by email.
SHIPPING TIME
Cerva Australia ships exclusively within the Australia (England, Scotland, Wales and Northern Ireland).
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Standard delivery: Total delivery time is approximately 5 business days (2–3 days processing + delivery).
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Remote or outlying regions: 6–10 business days due to distance, weather conditions and limited carrier routes.
Deliveries to areas such as the Scottish Highlands and Islands, Isle of Man, Channel Islands and certain rural postcodes may take longer because of seasonal and logistical factors.
We always strive for timely deliveries, but once a parcel is handed to the courier, Cerva Australia is not responsible for carrier delays, customs checks or weather-related disruptions.
SHIPPING CONFIRMATION AND TRACKING
Once your order has shipped, you will receive a shipping confirmation email containing your tracking number and a link to track your shipment.
Tracking details typically become active within 24–48 hours after dispatch.
SHIPPING RATES
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Standard shipping within the Australia is free on all orders.
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Expedited or express delivery options may be available at checkout for an additional fee depending on your location and chosen courier.
ADDRESS ACCURACY
Please ensure your shipping address is complete and accurate before placing your order. Cerva Australia is not responsible for delays, lost shipments or delivery issues caused by incorrect or incomplete addresses (including wrong house numbers, postcodes or flat numbers).
DAMAGED OR LOST PACKAGES
If your order arrives damaged, please contact us immediately at cevraaustralia@gmail.com with clear photos of the outer packaging and the damaged contents. We will review the case and work to resolve the issue as quickly as possible.
If your parcel is marked as “delivered” by the courier but you have not received it, please first:
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Check with neighbours or building reception/concierge
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Verify the shipping address used during checkout
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Contact your local delivery office or courier depot
If the issue continues, email us and we will help you open an investigation or claim with the carrier.
INTERNATIONAL SHIPPING
At this time, we only ship within the Australia. We may expand our shipping coverage to international destinations in the future.
CONTACT
If you have any questions about shipping, please contact us at: cevraaustralia@gmail.com
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