K18 Treatment ยท Walnut Creek, CA
Repair that works inside the strand, not just on top
The K18 Restorative Treatment is a salon repair service for hair that has been weakened by lightening, color or heat. It is made for guests who want internal repair rather than surface conditioning, with a visible improvement right away. Urban Loxx Salon & Day Spa in Walnut Creek offers K18, and many guests add it to a color or lightening appointment.
Is your hair asking for repair or just moisture?
Not all damage is the same. Dry hair feels rough but still has strength, and a good conditioner can bring it around. Damaged hair is different: the structure inside each strand has been worn down, so hair stretches, tangles, looks limp or snaps when you brush it.
That inner structure is what K18 is designed to address. Instead of coating the outside to make hair feel smoother for a few washes, it works inside the strand. Guests usually see an immediate visible improvement in softness and bounce, and the treatment supports long-term hair health as part of a regular routine.
K18 is a strong match for anyone who lightens, highlights or colors often, uses hot tools daily or is growing out hair that has been through a lot. It is also a smart addition when you are going lighter, since lightening is one of the main reasons hair loses strength in the first place.
It is not a fix for everything. K18 is a hair repair service, not a scalp or medical treatment. If your main concern is moisture, a Deep Conditioning Treatment may be all you need.
What happens during a K18 treatment
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Plan it around your color
K18 is often added to a color or lightening service, so the repair happens in the same visit that puts stress on your hair. Not due for color? Ask us how to fit it into another visit. When you book, mention your recent color history so your stylist knows what your hair has been through.
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A quick strength check
Before anything goes on, your stylist checks how your hair behaves. A wet strand that stretches too far without springing back, or ends that break easily, tells them the inside of the hair needs support. This check also helps set honest expectations about how much change you will see from one visit.
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Shampoo and application
Your hair is shampooed so the treatment can reach the strand without product in the way. Your stylist then applies K18 through damp hair, paying extra attention to lightened sections and fragile ends. If you are having color, they will time the treatment around your color service so each one can do its job.
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Style and see the difference
Your hair is then styled as usual. Many guests notice right away that it feels stronger, smoother and more elastic, with more natural movement. Your stylist will explain how K18 fits into your routine and whether a series of treatments makes sense for the level of damage in your hair.
More about K18 Treatment
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Making the repair count at home
K18 gives weakened hair a head start, and your habits decide how far that progress goes. The biggest factor is heat. Use a heat protectant every time and lower the temperature on flat irons and curling irons, since high heat undoes repair quickly.
Be gentle when hair is wet, because that is when it is most fragile. Use a wide-tooth comb and work up from the ends, and avoid tight elastics that snag. If you lighten regularly, think of K18 as part of your color plan rather than a one-time rescue. Your stylist will tell you how often to repeat it based on what your hair goes through between visits.
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K18 compared with other bond treatments
K18 sits in the bond repair family on our menu alongside the Olaplex Bond Treatment, which strengthens and fortifies hair. Both are aimed at hair that has been weakened by chemical services or heat. Which one your stylist suggests depends on your hair, the service you are having and how you respond to each.
Some guests switch between them or use one with color and the other on a separate visit. If you used to book the B3 treatment with us, these bond treatments now cover that need. The full lineup, including deep conditioning and smoothing services, is on our Hair Treatments page.
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Getting ready for your K18 visit
If you are planning a big color change, especially going lighter, book K18 with that appointment so the repair happens the same day. Tell your stylist about box dye, past lightening and any recent chemical services, even if they were a while ago. That history shapes the plan and helps your stylist decide how to time the treatment.
New guests can fill out our new guest form before the visit. Then pick a stylist from our team. For cost, current pricing is on our Service Menu, including how K18 pairs with color services. When you are set, Book Now or call us at (925) 939-6633.
Frequently Asked Questions
Does K18 work on bleached or highlighted hair?
Yes, that is one of the main reasons guests book it. Lightening breaks down the structure inside the hair, which is why bleached hair can feel stretchy or gummy. K18 is designed for that kind of internal damage, so blonde, highlighted and balayage hair are common candidates. Your stylist can tell you how much improvement to expect.
Is K18 just a fancy conditioner?
No. A conditioner mainly smooths the outside of the hair so it feels soft for a while. K18 is aimed at repair inside the strand, which is why it is recommended for hair that has been chemically weakened. Many guests still use a regular conditioner at home, since the two do different jobs.
Can K18 help with thinning hair or shedding?
K18 is a treatment for damaged hair strands, not for hair loss or the scalp. It is not designed to treat thinning or shedding. If you are noticing more hair in your brush or less density, check with your doctor about possible causes. Your stylist can still help you choose cuts and styling that suit your hair.
Will K18 change or fade my hair color?
K18 is a repair treatment, not a color product, and it is not meant to change your shade. Healthier hair often holds color more evenly and looks shinier, so your color may simply look fresher. If you are worried about a specific shade, ask your stylist how they plan to time K18 with your color.
How many K18 treatments will I need?
That depends on how damaged your hair is and how often you lighten or use heat. Some guests see enough change from one visit, while others with heavily processed hair do a short series. Your stylist will check your hair at each appointment and adjust the plan rather than selling you a fixed package.
Should men consider a K18 treatment?
Yes, if their hair is weakened. Men who bleach, color, use heat or spend lots of time in the sun or pool can see the same breakage and dullness as anyone else. Shorter hair gets cut more often, but if you are growing it out or lightening it, K18 can help it stay strong along the way.
Related services
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- StylingBlowouts, styling and event hair. Length and the style you choose move the price.Learn more →
- ColorGray coverage to full balayage. Length, thickness and how much lightening your hair needs move the price.Learn more →
- ExtensionsTape-in, hand-tied and K-tip. Installs, move-ups and removals are billed by the hour.Learn more →
- TreatmentsRepair and conditioning, on their own or added to a service. Length and thickness move the price.Learn more →
- Smoothing and TextureSmoothing, perms and relaxers. Length and thickness move the price.Learn more →
“When she washed my hair and applied the treatment, she gave me a relaxing head massage that I absolutely loved. ... my hair felt incredibly soft, healthy, and refreshed afterward.”
Larissa, Google review
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