FREE SHIPPING ON ALL ORDERS OVER $50*
Redken Extreme Length Litre Duo
Returns & Exchanges
Thank you for shopping at Zennkai.com.
ONLINE EXCHANGE POLICY
You have 10 calendar days to return an item for EXCHANGE ONLY from the date you received it. As the purchaser you would be responsible for return shipping charges.
Final sale items are not eligible for exchange or store credit. Final Sale items include Litres, Litre Duos, Clearance, Last Chance, Hot Tools, Hair Accessories, Brushes, Combs, Nail Polishes, Nail Accessories, Hair Extensions, and Appliances.
To be eligible for a exchange:
- your item(s) must be either be unused or no more than a quarter of the volume missing.
- your item(s) must be in the original packaging.
- your item(s) need to have the receipt or proof of purchase.
STEP 1 - Complete the online return form in full. Incomplete forms will not be accepted: Click here to download a return form
STEP 2 - Ship your item(s) back to us. You are responsible for return shipping charges. Shipping costs are non-refundable.
STEP 3 - We will immediately notify you on the status of your exchange after inspecting your returned item(s)
STEP 4 - You can exchange your item(s) or receive an online shop credit in the form of an e-gift card
In the event that you cannot find a suitable exchange a merchandise credit for the same value of the product purchased will be issued to you in the form of a store credit. Store credits cannot be redeemed for cash or refunded. You will receive your e-gift card within 5 business days after the exchange is confirmed
RETURNING TO A ZENNKAI SALON LOCATION
Should you prefer to return your online purchases to a location near you, come visit us! Simply bring your items and proof of purchase to our salons, following our set out Exchange Policy.
Final sale items are not eligible for exchange or store credit. Final Sale items include Litres, Litre Duos, Clearance, Last Chance, Hot Tools, Hair Accessories, Brushes, Combs, Nail Polishes, Nail Accessories, Hair Extensions, and Appliances.
If you are not fully satisfied with your purchase we will EXCHANGE it within 10 days with proof of purchase. EXCHANGE OR STORE CREDIT ONLY, NO CASH REFUNDS.
Hair Tools & Appliances
Zennkai provides a 1 year warranty on electrical tools with a manufacturer defect. They can be exchanged within one year of original purchase date, with proof of purchase and in its original packaging/box.
All electrical tools may be returned for exchange only due to manufacturer defect, with proof of purchase and all original components. No exchanges will be given without proof of purchase. Items must be in the original box/packaging. In the event that you cannot find a suitable exchange a merchandise credit for the same value of the product purchased will be issued to you in the form of a store credit.
Hot Tools & Appliances are a FINAL SALE unless manufacturer defect and are not eligible for exchange or store credit.
Shipping
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are nonrefundable.
Contact Us
If you have any questions on how to return your item to us, contact us via email at zennkai@megahairfamily.com.
Corporate Office
310-5491 REGENT ST
BURNABY BC V5C 4H4
Email: zennkai@megahairfamily.com
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The Redken Extreme Length Litre Duo is the professional-size shampoo and conditioner for long hair that breaks, splits, and struggles to retain length — formulated with biotin and a cationic protein complex that strengthens the hair fibre from root to tip so your hair can actually grow as long as you want it to, in the 1-litre professional size at Canada's lowest price.
What's Included
• Redken Extreme Length Shampoo — 1 litre (1000ml)
• Redken Extreme Length Conditioner — 1 litre (1000ml)
Why Buy the Litre Size
• 35% savings vs buying two regular-size bottles — length-focused routines require consistent daily use to see results
• Long hair uses more product per wash — the litre size is the practical choice for anyone with mid-back length or longer
• Professional salon size — the same Redken Extreme Length that stylists recommend for clients growing their hair
• Not available at Sephora in litre format — Zennkai is one of the few authorized Canadian sources
• Lasts approximately 2–3 months for long or thick hair with daily use
About Redken Extreme Length
Redken Extreme Length is built around one specific goal: helping hair grow longer by preventing the breakage that causes length loss. Most people's hair grows fine — it's the breakage at the ends that prevents length retention. The Extreme Length system uses biotin to support the hair's natural growth cycle and a protein complex that reinforces the weakest parts of the hair strand — the mid-lengths and ends where breakage most commonly occurs. Used consistently, it creates measurably stronger hair that holds onto every centimetre of growth.
Key Ingredient
Biotin — a B-vitamin that supports the hair's natural growth and keratin infrastructure. Cationic protein complex — Redken's targeted protein delivery system that fills in weak spots along the hair shaft, reducing breakage and improving tensile strength at the areas most vulnerable to snapping.
Best For
• Long hair that breaks, splits at the ends, or struggles to grow past a certain length
• Hair that has been damaged by heat styling or colour and needs structural reinforcement
• Anyone actively growing their hair and wanting to retain every centimetre of length
• Colour-treated long hair — Extreme Length is colour-safe
• Fine long hair prone to breakage at the ends during styling
Available at Zennkai — Canada's lowest professional price on Redken Extreme Length. Authorized Redken retailer. 100% authenticated professional stock. Free shipping on orders over $50. Ships anywhere in Canada. Shop the full Redken collection at zennkai.com/collections/redken.