FREE SHIPPING ON ALL ORDERS OVER $50*
Redken Acidic Grow Full Litre Duo
Returns & Exchanges
RETURN & 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
Couldn't load pickup availability
The Redken Acidic Grow Full Litre Duo is the professional 1-litre shampoo and conditioner that addresses two needs simultaneously — the bond damage that colour and heat cause in fine hair, and the volume deficit that makes fine hair feel limp and flat — using acidic bonding technology for cuticle sealing and a volumising complex that lifts without the protein heaviness that can flatten fine strands, at Canada's lowest price.
What's Included
• Redken Acidic Grow Full Shampoo — 1 litre (1000ml)
• Redken Acidic Grow Full Conditioner — 1 litre (1000ml)
Why Buy the Litre Size
• Save 27% vs buying two regular bottles — fine hair benefits from consistent daily use and the litre provides that without frequent repurchasing
• Fine hair's combination of bond vulnerability and volume needs makes this a year-round daily system
• 1000ml vs 900ml from three regular bottles — 100ml extra free every purchase
• Professional salon size not available at Sephora — Zennkai is an authorized Canadian source
• Lasts approximately 4–6 months for fine, medium-length hair with daily use
About Redken Acidic Grow Full
Redken Acidic Grow Full represents a newer generation of Redken's acidic bonding innovation — recognizing that fine, colour-treated hair has compound needs that aren't fully served by bond repair or volume alone. The acidic pH chemistry seals the cuticle and protects bonds; the volumising complex lifts at the root without the weight that causes fine hair to flatten by midday. The result is hair that feels structurally sound, bouncy, and full — not just temporarily lifted.
Key Ingredient
Acidic bonding technology — lowers pH to seal the cuticle and protect colour-treated bonds in fine hair. Volumising complex — a lightweight filling agent that builds body and lift at the root without protein heaviness or surface buildup that weighs fine hair down.
Best For
• Fine, colour-treated hair needing bond repair without losing volume
• Thinning fine hair that's also chemically processed
• Anyone whose fine hair goes limp quickly after colouring or highlighting
• Clients wanting the benefits of Acidic Bonding Concentrate in a lighter, volume-friendly formula
• Fine hair where both structural protection and visual fullness are priorities
Available at Zennkai — Canada's lowest professional price on Redken. Authorized retailer. 100% authenticated professional stock. Free shipping on orders over $50. Ships anywhere in Canada. Beauty with Benefits members earn points on every purchase — join free at zennkai.com/pages/beauty-with-benefits. Shop the full Redken collection at zennkai.com/collections/redken.