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Where to buy K18 with discounts?

Discover the latest K18 discount codes and coupons. Shop through Monetha app to get cashback rewards on top!

Top products

K18 Leave-in Molecular Repair Hair Mask 50ml Discounts and Cashback
K18 Leave-in Molecular Repair Hair Mask 50ml
The iconic leave-in treatment mask for all hair types that repairs chemical and environmental damage in just 4 minutes, leaving hair stronger, smoother, shinier, and bouncier.
70.00 USD
up to 8% back
K18 Molecular Repair Hair Oil 30ml Discounts and Cashback
K18 Molecular Repair Hair Oil 30ml
Formulated with natural oils and the K18 peptide, this weightless hair oil strengthens, reduces damage, and provides heat protection for smoother and shinier hair.
52.00 GBP
up to 8% back
K18 Peptide Prep Detox Shampoo 250ml Discounts and Cashback
K18 Peptide Prep Detox Shampoo 250ml
A color-safe clarifying shampoo with the K18 peptide, active charcoal, and salicylic acid for refreshed and detoxified hair without stripping the essential moisture and lipids.
39.00 GBP
up to 8% back
K18 Peptide Prep pH Maintenance Shampoo 250ml Discounts and Cashback
K18 Peptide Prep pH Maintenance Shampoo 250ml
Formulated with natural oils and the K18 peptide, this weightless hair oil strengthens, reduces damage, and provides heat protection for smoother and shinier hair.
39.00 GBP
up to 8% back
K18 Leave-in Molecular Repair Hair Mask 15ml Discounts and Cashback
K18 Leave-in Molecular Repair Hair Mask 15ml
The iconic leave-in treatment mask for all hair types that repairs chemical and environmental damage in just 4 minutes, leaving hair stronger, smoother, shinier, and bouncier.
30.00 GBP
up to 8% back
K18 Molecular Repair Hair Oil 10ml Discounts and Cashback
K18 Molecular Repair Hair Oil 10ml
Formulated with natural oils and the K18 peptide, this weightless hair oil strengthens, reduces damage, and provides heat protection for smoother and shinier hair.
27.00 GBP
up to 8% back

Verified K18 discount and coupon codes

K18 deals at Feelunique

up to
70%
off
Sale
Get up to 70% off of Skin and Body products, free gifts and more!
9%
back
Cashback
Up to 9% cashback for purchases sitewide
Combine with other offers for an even better deal!
up to
50%
off
Sale
Selected products
35%
off
Coupon
Get 35% off the Beauty icons' brands with code: SURPRISEUS
SURPRISEUS
Free gift
Sale
Purchase select items and get valuable free gifts
20%
off
Coupon
New customer? Get 20% off your order
USNEW20
Offers
Sale
Feelunique provides a great variety of offers in different categories
30%*
off
Coupon
Spend $175 – get 30% off
SHOPUS30
20%*
off
Coupon
Spend $100 – get 20% off with a code SHOPUS20
SHOPUS20

K18 deals at Sephora

up to
70%
off
Sale
Get up to 70% off of Skincare products, including skin-protecting SPF, cloud-light moisturisers and so much more.
8%
back
Cashback
Up to 8% cashback for purchases sitewide
Combine with other offers for an even better deal!
up to
70%
off
Sale
Up for the most gorgeous locks ever? Now’s your chance, because Sephora is offering up to 60% off haircare products!
30%
off
Sale
Get 30% off of Sephora Collection line

K18 deals at KLIPshop

up to
80%
off
Sale
Get up to 80% off selected products
8%
back
Cashback
Up to 8% cashback for purchases sitewide
Combine with other offers for an even better deal!
70%
off
Sale
Get 70% off of selected IDUN products
45%
off
Sale
Get 45% off of selected Bioxsine products
up to
40%
off
Sale
Get up to 40% off selected Wella products
up to
40%
off
Sale
Get 40% off of selected Maybelline products
up to
40%
off
Sale
Get up to 40% off of selected Paese products
up to
35%
off
Sale
Get up to 35% off of selected Skinlovers products
up to
25%
off
Sale
Get up to 25% off of selected HH Simonsen products
up to
25%
off
Sale
Get up to 25% off of selected Sesderma products
10%
off
Coupon
Get 10% off discount to all products with a code: LOVE
LOVE

K18 deals at StrawberryNET

up to
93%
off
Sale
Explore big Clearance discounts - up to 93% off
10%
back
Cashback
Up to 10% cashback for purchases sitewide
Combine with other offers for an even better deal!
up to
60%
off
Sale
Mother's day - up to 60% off + free gift
25%
off
Sale
Get up to 25% off your first order

K18 deals at eCosmetics

15%
off
Sale
Save an extra 15% when you subscribe to eCosmetics newsletter and get the inside scoop on new arrivals, sales, and promos!
8%
back
Cashback
Up to 8% cashback for purchases sitewide
Combine with other offers for an even better deal!

K18 deals at Space NK

Free gift
Sale
Enjoy a FREE Gift Worth £370 When You Spend £175
7%
back
Cashback
Up to 7% cashback for purchases sitewide
Combine with other offers for an even better deal!
OFFERS
Sale
Explore a variety of offers from Space NK
Free delivery
Sale
Free delivery on all orders over £25

Featured in

About K18

Founded in 2020, K18 is a fast-growing, future-forward haircare brand that has successfully meshed beauty and biotechnology in its biomimetic products. Because of their highly potent formulations that heal hair strands from within and deliver unparalleled results, the K18 product range has become highly popular among professional hair stylists and TikTok beauty enthusiasts alike.

K18 science-backed results have been the brand’s ticket to incredible popularity, making it a firm fan-favorite among those who tried it.

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K18 FAQs

Why is K18 so popular?

Regular hair conditioners and masks do a great job of moisturizing and conditioning hair from the outside. And while such treatments do give you instant and visible results, the effect is gone right after your next wash. That’s not the case with K18, where every product on its line is patented for clinically improving hair from the inside by repairing broken polypeptide chains and restoring it on a molecular level.
Since K18 products actually restore damaged hair and not just mask the problems, their advantage is quite obvious in treating various hair problems.

Where is K18 made?

As of right now, all of K18’s products are made in North America, with their headquarters in San Francisco, but their active ingredient, the K18 peptide, was created in Portugal. In the beginning, the brand was privately owned but has since been purchased by Unilever.

Are K18 hair products good?

With millions of positive reviews, we’d be surprised if they weren’t! In a nutshell, K18 repairs the broken keratin bonds inside your hair, thus making it look better and feel softer. That said, unlike your regular mask, K18 products need to be used for at least a couple of washes in a row for maximum results. All in all, though, the products are excellent in repairing really dry and damaged hair, so if you don’t mind the price, the results speak for themselves.

Is K18 a clean brand?

K18 is a vegan and cruelty-free brand with formulations free of sulfates, parabens, phthalates, silicones, artificial colors, and sodium chloride. That said, their formulations are not organic, employing both natural and synthetic ingredients to maximize the product’s efficacy.