K18

£30
0 mins
Book Online

K18 is a professional molecular repair treatment that works on the inner structure of your hair to reverse damage from colouring, bleaching, heat styling and chemical services. Using a patented K18Peptide™, it reconnects broken keratin chains deep inside the hair in just 4 minutes, restoring strength, elasticity and smoothness from the inside out. Suitable for all hair types, it is particularly transformative for bleached, colour-treated or heat-damaged hair that feels fragile or lacks resilience.

More information

What Happens During the Treatment

The K18 service is applied after your cut, colour or blow-dry appointment, or as a standalone reset treatment:

  • Your hair is shampooed thoroughly with no conditioner, so the peptide can penetrate cleanly
  • Hair is towel-dried to damp, not dripping wet
  • A small amount of K18 is worked through from ends to roots, tailored to your hair length and thickness
  • The treatment is left for 4 minutes to activate and bond inside the hair
  • No rinsing — your hair is then styled as usual, and other products can be added after the 4-minute window

The active repair step takes just 4 minutes once applied, making it an efficient add-on to any salon visit.

Who K18 Is For

K18 suits anyone whose hair has been compromised by chemical or heat damage, particularly if you:

  • Have colour-treated, highlighted or bleached hair that feels dry, stretchy or prone to breakage
  • Notice split ends, roughness or lack of shine despite regular conditioning
  • Want to protect and repair your hair during or after colour services, especially balayage, foils, tint or correction work
  • Use heat tools regularly and want to restore your hair's natural strength and bounce
  • Are preparing for a big colour transformation and want to safeguard your hair's condition throughout

Our team in Crawley often recommends K18 alongside colour melts, babylights, full head foils and AirTouch balayage to help maintain hair integrity through the lifting and toning process.

How It Works and What to Expect

Unlike traditional masks that coat the surface, K18 uses a patented peptide small enough to penetrate into the inner layers of the hair and reconnect broken keratin chains. This means it repairs damage at a molecular level, rather than temporarily smoothing the cuticle.

Most clients notice:

  • Hair that feels softer, smoother and more manageable immediately after the first use
  • Improved elasticity and resilience, with less snapping or breakage when brushing or styling
  • A healthier, glossier appearance that lasts through multiple washes
  • Better response to styling tools and products in the days that follow

For an intensive reset, the brand recommends K18 for 4 to 6 consecutive washes, then moving to maintenance every 3 to 4 washes or as needed. Our stylists will guide you on the best schedule for your hair and how to continue the treatment at home if you choose.

Aftercare and Maintenance

K18 repairs are designed to last through washes because the peptide bonds inside the hair, but ongoing heat styling or chemical processing means periodic retreatments will help maintain your results:

  • Continue your normal shampoo and conditioning routine after the in-salon treatment
  • If using K18 at home, follow the same protocol: shampoo only, no conditioner, apply to damp hair, wait 4 minutes, then style
  • Keep heat styling gentle: use a heat protectant, moderate temperatures, and avoid excessive passes with irons or dryers
  • Space out aggressive chemical treatments and book regular trims to preserve hair health
  • Avoid heavy product build-up between K18 uses; a clarifying shampoo before treatment can improve penetration if your hair feels coated

Our Crawley team will talk you through the right aftercare plan for your hair type and how best to combine K18 with your colour, cutting and styling routine for long-lasting condition and shine.

Book Online

Client Reviews

5.0

Based on 1 review

  • A

    Alexx btw

    I trust Sam with my life and is the only person I will go to for colour - she’s Michelangelo with colour and scissors!! Always sees the vision and executes to perfection!!

Frequently Asked Questions

What is K18 and how does it work?
K18 is a professional molecular repair treatment that uses a patented peptide to penetrate deep into the hair and reconnect broken keratin chains caused by colour, bleach, heat and chemical damage. It repairs the inner structure of the hair in 4 minutes, restoring strength, elasticity and smoothness from the inside out rather than just coating the surface.
How much does K18 cost and how long does it take?
K18 is £30 as an add-on treatment. The active repair step takes 4 minutes once applied. Total appointment time depends on whether it's combined with a cut, colour or blow-dry, but the K18 application itself is quick and efficient.
Who is K18 suitable for?
K18 is suitable for all hair types, particularly colour-treated, bleached, heat-damaged or chemically processed hair. It's ideal if your hair feels dry, stretchy, prone to breakage, or lacks shine, and works well alongside any colour service including balayage, foils, tint and colour correction.
Do I need to rinse K18 out after the 4 minutes?
No, K18 is a leave-in treatment. After the 4-minute activation period, your hair is styled as usual without rinsing. Other styling or heat-protectant products can be applied after the 4 minutes have elapsed.
How often should I have K18 treatments?
For an intensive reset, K18 is recommended for 4 to 6 consecutive washes, then maintenance every 3 to 4 washes or as needed depending on your hair condition and styling habits. Our stylists will recommend the best schedule for your hair during your consultation.
Can K18 be used on the same day as colour or bleach?
Yes, K18 is frequently used during or immediately after colouring, bleaching or chemical services to help protect and repair the hair structure. Many clients in Crawley add K18 to their balayage, foil or tint appointments to maintain hair integrity throughout the process.
What results can I expect from K18?
Most clients notice softer, smoother, more manageable hair with improved elasticity and less breakage after the first use. Hair often looks glossier and healthier, and responds better to styling tools and products. Results are cumulative and last through washes, though ongoing damage from heat or chemicals means periodic retreatments help maintain condition.
How do I prepare for a K18 treatment?
No special preparation is needed. Your hair will be shampooed in the salon without conditioner so the peptide can penetrate cleanly. If your hair has heavy product build-up, a clarifying shampoo beforehand can improve results, and our team will advise you if this is recommended.
Can I use K18 at home between salon visits?
Yes, K18 is available for home use. Follow the same protocol: shampoo only, skip conditioner, apply to damp (not dripping) hair, wait 4 minutes without rinsing, then style. Our stylists can guide you on the right dosage and frequency for your hair type.
Will K18 weigh my hair down or make it feel greasy?
K18 has a lightweight cream texture and should not weigh hair down or feel greasy when the correct amount is used. Over-application can make hair feel coated, especially on fine hair, so using the minimal effective dose (typically 1 to 3 pumps depending on length and thickness) is important. Our team will tailor the application to your hair during your appointment.