K18 Hair Discount Codes
There's a low chance you'll find a working K18 Hair discount code right now. On this page you'll find all 30 codes ranked by what's worked at checkout. The best one to try is WELCOME, though nothing's a sure thing.
How often K18 Hair codes work
Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.
| Discount | Last used | Performance | Promo code |
|---|---|---|---|
| Free gift with every purchase | 2mo ago | Code hidden — select Show to reveal and copy it | |
| 10% off first order | 7d ago | Code hidden — select Show to reveal and copy it | |
| 10% off first purchase of K18 products | 5d ago | Code hidden — select Show to reveal and copy it | |
| Free full-size shampoo on $100+ orders | 2w ago | Code hidden — select Show to reveal and copy it | |
| $100+ | 3d ago | Code hidden — select Show to reveal and copy it | |
| 10% off storewide Hair Products | 5mo ago | Code hidden — select Show to reveal and copy it | |
| 10% off Free Damage Shield Protective Conditioner | 4mo ago | Code hidden — select Show to reveal and copy it | |
| 10% off AirWash | 4w ago | Code hidden — select Show to reveal and copy it | |
| 10% off your first purchase of hair care products | 2w ago | Code hidden — select Show to reveal and copy it | |
| 10% off storewide | 4mo ago | Code hidden — select Show to reveal and copy it | |
| 10% off your first purchase | 5w ago | Code hidden — select Show to reveal and copy it | |
| 10% off select items | 4mo ago | — | Code hidden — select Show to reveal and copy it |
| 10% off storewide | 5mo ago | — | Code hidden — select Show to reveal and copy it |
| 12% off storewide | 6w ago | — | Code hidden — select Show to reveal and copy it |
| 10% off storewide at K18 Hair | 11mo ago | — | Code hidden — select Show to reveal and copy it |
| 10% off select items at the salon | 1y+ ago | — | Code hidden — select Show to reveal and copy it |
| 10% off | 7d ago | — | Code hidden — select Show to reveal and copy it |
| $100+ purchase: FREE washcare duo + bag | 4mo ago | Code hidden — select Show to reveal and copy it | |
| 10% off your first purchase of hair products | 3w ago | Code hidden — select Show to reveal and copy it | |
| 15% off storewide | 4w ago | Code hidden — select Show to reveal and copy it | |
| 15% off your order | 8w ago | Code hidden — select Show to reveal and copy it | |
| 50% off TVR Summit registration | 5w ago | Code hidden — select Show to reveal and copy it | |
| 10% off your first purchase of hair products | 7d ago | Code hidden — select Show to reveal and copy it | |
| 20% off | 3w ago | Code hidden — select Show to reveal and copy it | |
| 20% off | 3w ago | Code hidden — select Show to reveal and copy it | |
| 30% off storewide | 2w ago | Code hidden — select Show to reveal and copy it | |
| Discount code: SPRINGSA… | 4mo ago | — | Code hidden — select Show to reveal and copy it |
| 10% off Complimentary Treatment | 4mo ago | Code hidden — select Show to reveal and copy it | |
| 20% off holiday kits and essentials | 4mo ago | — | Code hidden — select Show to reveal and copy it |
About this page
Introducing a more honest way to find coupon codes
Every code has a history, and we track it
Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.
Likely not workingMixed resultsHigh chance of working
You'll find one of these charts on every code we list, tracking how it has performed over time.
When there is nothing worth trying, we say so
When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.
Good chance right now78%
Nothing likely right now9%
A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.
