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Where to buy K18 with discounts?

Get the best deals, discounts, and cashback on K18 products

Top products

K18 Detox + Repair Anywhere Set Discounts and Cashback
K18 Detox + Repair Anywhere Set
A set of Detox shampoo and leave-in treatment mask in travel-size bottles to take with you anywhere you go.
39.60 USD
up to 9% back
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.
84.00 USD
up to 9% 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.
62.40 USD
up to 9% 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.
46.80 USD
up to 9% 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.
46.80 USD
up to 9% 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.
36.00 USD
up to 9% 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.
32.40 USD
up to 9% back

Verified K18 discount and coupon codes

K18 deals at Feelunique

up to
70%
off
Sale
Selected products
Up to 70% off Skin and Body, 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
No coupon code needed. Tap to shop the sale.
35%
off
Coupon
Beauty Icons sale
Get 35% off the Beauty icons' brands with code: SURPRISEUS
SURPRISEUS
FREE GIFT
Sale
Select items grant free gifts
Purchase select items and get valuable free gifts.
20%
off
Sale
New customer? Get 20% off!
New customer? Get 20% off your order
USNEW20
OFFERS
Sale
Explore various different offers
Feelunique provides a great variety of offers in different categories. Check them out.
30%*
off
Coupon
Spend $175 – get 30% off
Spend $175 – get 30% off
SHOPUS30
20%*
off
Coupon
Spend $100 – get 20% off
Spend $100 – get 20% off with a code SHOPUS20
SHOPUS20

K18 deals at Sephora

up to
70%
off
Sale
Skincare products offer
Featuring 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
50%
off
Sale
Get up to 50% off of fragrances
up to
45%
off
Sale
Get up to 45% off of selected Gucci Fragrances
up to
30%
off
Sale
Get up to 30% off of Sephora Collection line
25%
off
Sale
Get 25% off of selected Sephora Collection body mists
20%
off
Sale
Get 20% off Fenty Beauty by Rihanna lip products
up to
18%
off
Sale
Get up to 18% off of selected Maison Margiela fragrances
15%
off
Sale
Get 15% off of selected Sol de Janeiro products
15%
off
Sale
Get 15% off of selected Kayali fragrances
Free gift
Sale
Spend £120 or more and receive a gift (worth over £100)
Spend £120 or more on your order and receive a Love Story Starters Beauty Bag (worth over £100).
Free gift
Sale
Free cosmetics case
Get a free cosmetics case by purchasing select Marc Jacobs fragrances and using the promo code at the checkout: MJDAISY
MJDAISY
Free gift
Sale
Free Rare Beauty gift
Get a free Rare Beauty trial size item by using this promo code at the checkout: RAREBODY
RAREBODY
Free gift
Sale
Free hydrating skincare gift
Use this promo code at the checkout and receive a free hydrating skincare gift: SKINHYDR8
SKINHYDR8
Free gift
Sale
Free mini fragrances
Get 3 mini fragrances for free with this code entered at the checkout: MORESCENTS4U
MORESCENTS4U

K18 deals at KLIPshop

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

K18 deals at StrawberryNET

20%
off
Coupon
Spend $80+ and receive 20% off the order
SBN20NEW
10%
back
Cashback
Up to 10% cashback for purchases sitewide
Combine with other offers for an even better deal!
up to
40%
off
Sale
Get up to 40% off when shopping for MEDAVITA products
15%
off
Sale
Get 15% off extra discount
10%
off
Coupon
Enjoy an extra 10% off your purchase of Hermes products with code: TOPBRAND
TOPBRAND
up to
83%
off
Sale
Explore big Clearance discounts - up to 83% off

K18 deals at eCosmetics

15%
off
Sale
Sign-up to newsletter
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

20%
off
Sale
Get 20% off Luxury skincare products
7%
back
Cashback
Up to 7% cashback for purchases sitewide
Combine with other offers for an even better deal!
15%
off
Coupon
Get 15% off your first order by entering the Space NK discount code: FIRST15 , at the checkout
FIRST15
Free gift
Sale
Buy selected products marked with "FREE GIFT" and receive valuable goodies with your purchase

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.

Read More Read Less

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.

Why use Monetha?

We find the best deals for your favorite brands every day. But even the best deals are better with cashback!

Click on any shop in the Monetha app, and start making cashback today!