k18hair.com
12 offers to explore · Updated
SAVE ON YOUR NEXT ORDER
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Expires Nov 19, 2026.
Find top Hair Repair Products selections and Hair Treatment essentials, with other curated items.
Receive free shipping service on Molecular Repair Mask and other selections. Start shopping today.
Expires Nov 19, 2026.
Save $10 on Leave-in Conditioner and Hair Heat Protectant, with even more items available across K18's collections.
Expires Nov 19, 2026.
Explore a variety of Leave-in Molecular Repair and Hair Mask options, plus other items to complete your first shopping experience.
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Past promotions for reference. These offers may no longer be redeemable.
| Code | Discount | Offer | Expires |
|---|---|---|---|
| Deal | 10% OFF | Save 10% on Any Order with email signup | Nov 19, 2026 |
| Deal | Up to 15% OFF | K18 Deal: Subscribe & Save up to 15% off | See merchant |
| Deal | Free Shipping | K18 Deal: Free Shipping on $50+ Orders | Nov 19, 2026 |
| Deal | $10 OFF | Save $10 on $50+ Purchase with K18 Offer | Nov 19, 2026 |
| Deal | First Order | Join the Waitlist for Purple Shampoo | Nov 19, 2026 |
K18 is a haircare brand built on biotechnology, made for hair that has been deeply damaged by chemical treatments, heat and coloring. Its flagship product, the K18 Peptide, is designed to work into the hair shaft and reconnect broken keratin chains, which helps the hair's strength and elasticity. The brand's signature leave-in molecular repair mask delivers results within four minutes and is applied without rinsing. Alongside the core repair mask, K18 sells complementary items such as shampoos and conditioners that help maintain hair health, so the range covers a variety of hair care needs with an emphasis on modern restoration.
The company was started in 2018 by Suveen Sahib and is based in Los Angeles, California. K18 focuses on repairing hair at a molecular level rather than coating it, which is the idea behind its peptide-based formulas. Founded on that research-led approach, the line has grown to cover repair after coloring as well as everyday upkeep for different hair types.
Shoppers buy through k18hair.com, where Visa is accepted for payment. Items purchased directly through the website can be returned or replaced within six months, and refunds are issued to the credit card, generally arriving in up to two weeks. K18 also runs a community rewards program in which members collect K18 coins by completing challenges, leaving reviews and referring friends, and those coins can be exchanged for discounts and perks such as early access to new products and exclusive invitations. A newsletter brings offers and promotions, and gift cards can be bought and given to friends or family, who then choose their own products.
Confirm current details directly with the merchant.
Codes go into the coupon box at the K18 checkout; deals need no code.
Pick a code from the list above. Its details give the discount and any conditions, such as a minimum spend or an end date.
Select Show Code. A window opens with the full code, a Copy code button and a link to k18hair.com.
Add your items at k18hair.com, then paste the code into the coupon box in your cart or at checkout.
Make sure the discount shows in the order total before you pay. If it does not, the order may not meet one of the code's conditions.
Yes, K18 runs a Refer-a-Friend program that gives $10 off to both people. The friend gets $10 off a first purchase of $50 or more, and the person who referred them gets $10 off a following order once that friend completes a qualifying first purchase. The referral link can be found and shared on the K18 Referral Page.
Shoppers can follow their order by signing into their Khairpep account and opening the Order Status section, where updates on the delivery's progress are posted.
Yes, K18 gives a 10% first order discount to eligible new customers.
Yes, at K18, Khairpep provides wholesale services for those wanting to place bulk orders. Wholesale customers reach out to the Khairpep team directly to ask about pricing and product availability for large quantities.
Yes, at K18, Khairpep sells gift cards that can be given to friends or family. Recipients spend them on the Khairpep website, where they pick out their own products.
At K18, Khairpep tends to run special discounts during big shopping seasons, including Black Friday, Cyber Monday and the holiday season, and shoppers can use those sales to save on what they buy.
At K18, shoppers can join the Khairpep newsletter for exclusive offers and promotions, and can also watch the website for seasonal sales and special discounts.
A code fails when the order misses one of its conditions, such as eligible products or a minimum spend, or when the promotion has ended. Each offer's details list its conditions.
There are no K18 codes on this page right now. The biggest deal is up to 40% off.
5 of the 12 offers have an end date. The next to end is the deal "Free K18 2 Free Samples on $50 Orders", on Nov 18, 2026. The others have no published end date.
No offer on this page says whether it can be combined with others. Checkout normally takes one code per order.
Yes, K18 has a community rewards program in which K18 coins are earned for actions such as completing challenges, leaving reviews and referring friends. Those coins can be redeemed for discounts and perks, including early access to new products and exclusive invites.
6 months.
Products must be purchased directly through the website.
Up to two weeks.
Return or replace products.
Credit card refund.
Products must be purchased directly through the website.
K18 accepts Visa.
K18 has official accounts on Facebook, Twitter, YouTube, Instagram, Pinterest and 2 more.
Over the past year, 37 K18 codes were collected, about 3 a month. The busiest month was Nov 2026, with 13 codes. The most popular discount was 30% off, offered in Dec 2025.
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