K18REPAIR™ Starter Set
Powerful professional duo fortifies, strengthens + repairs hair in 2 easy steps
K18REPAIR™ is a 2-step salon-exclusive damage repair service powered by K18PEPTIDE™ to protect, strengthen + preserve all hair types through lightener, color, chemical services, and heat*. Feel confident in every service + deliver hair like new*—no matter what you put it through.
*Disclaimers
more to know
K18REPAIR™ is powered by the reparative K18PEPTIDE™ to reconnect broken disulfide bonds + polypeptide chains for immediate + lasting repair at the deepest, molecular level of hair. It’s more than a bond builder—K18PEPTIDE™ is biomimetic to hair and works past the outer cortex (where bond builders work)—so water can't wash away your results.
2 steps, 4 minutes each. No extra rinse required.
step 1: repair hair to the core pre-service
PRO mist - Fortify hair to restore up to 99% elasticity - Improve hair’s resilience to prevent damage during + after services - Deliver stronger hair over time - Make color last longer + fade slower when paired with K18 mask usage at home - pH 7.5-8.0 swells the hair cuticle open for effective repair pre-service
step 2: reverse damage post-service
PRO mask - Reverse damage from lightener + color, chemical services, and heat* - pH 5.0-6.0 helps close the cuticle + seal K18PEPTIDE™ into the hair for lasting results - Soften + detangle all hair types with lightweight emollients
key benefits
Professional molecular repair hair mist: Fortifies hair pre-service to restore up to 99% elasticity Improves post-service resilience for stronger hair over time Color lasts longer + fades slower when paired with mask usage at home*
Professional molecular repair hair mask: Reverses hair damage caused by bleach + color, chemical services, and heat.
Immediate + progressive results*
Vegan, color-safe, cruelty-free
how to use
For stylist use with a color or chemical service
Apply the PRO molecular repair hair mist: 1. Apply a minimum of 10 full sprays of K18 professional molecular repair hair mist to each quadrant, increasing up to 20 sprays per quadrant as needed, depending on client’s length, density, and level of damage. 2. Wait 4 minutes (do not rinse out). 3. If needed, dry the hair prior to applying lightener or color. Then perform your desired technique. 4. Process your lightener or color as usual, then rinse and shampoo with K18 PEPTIDE PREP™ detox shampoo. Do not condition.
Finish with the PRO molecular repair hair mask: 1. Apply 1-3 pumps of K18 professional molecular repair hair mask based on your client’s length and density, starting at the ends and working up towards the roots. 2. Wait 4 minutes (do not rinse), then proceed with cut or style as usual.
ingredients
professional molecular repair mist
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Polysorbate 20, sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Phenoxyethanol, Potassium Sorbate, Potassium Hydroxide, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
professional molecular repair hair mask
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20,sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
See how K18 unlocks our community's expression
- Repair
- Quality
- Appearance
- Effectiveness
- Professional
- Adrienne W.ReviewingK18REPAIR™ Starter SetI recommend this productAge 45 - 54Client Hair Concerns Chemical Damage, Fragile/Brittle Hair, Heat Damage, Split Ends, DrynessClient Hair Types Fine/Thin, Thick/Coarse, Straight/Wavy, Medium Density, Curly/CoilyClient Results Less Frizz, Visible Difference, Less Breakage, Smoother Hair, Stronger hairRated 5 out of 5 stars6 months agoHoly Grail of hair products
I am a Blonding specialist as well as a color correction specialist . I have been using k18 products on my clients since last summer (2025), when I tell you it has completely transformed their hair, you wouldn’t believe me unless you saw it with your own eyes. I have literally taken broken damaged hair, and used a routine of peptide shampoo and other k18 products and completely transformed so many of my damaged clients hair. This stuff is unbelievable. I DO NOT DO Any service without it. Call me crazy, bc I know this stuff is like gold, but I deal with a lot of medically fragile patients as well so their hair is their prize possession that makes them feel normal. I do not want to compromise the integrity of their hair at all. So this stuff is so worth it. I would buy stock in this company if I could. I literally buy salon centric out of it almost weekly bc I use it that much!!!!!! Here are just a few of this weeks clients
Was this helpful?K18Hair PRO6 months agoThank you so much for this absolutely incredible review, Adrienne! We're beyond thrilled to hear that you've been using K18 products on your clients and seeing such transformative results! As a blonding and color correction specialist, your professional expertise means everything to us, and knowing that you've been able to completely restore damaged hair using our peptide shampoo and other K18 products is exactly what we hoped to achieve. We're especially touched to hear how you're using our products with your medically fragile patients - the fact that you trust K18 to help preserve their hair's integrity while making them feel normal and confident truly warms our hearts. It's amazing that you won't do any service without it and that you're buying Salon Centric out of stock weekly - that level of trust from a professional like you means the world to us! We're so grateful to have you as part of our K18 community and for helping transform so many clients' lives through healthier, stronger hair!
- Amelita C.Verified BuyerReviewingProfessional Molecular Repair Mask 150 mL (WHOLESALE)I recommend this productAge 45 - 54Client Hair Concerns Chemical Damage, Fragile/Brittle Hair, Split Ends, Color Care, FrizzClient Hair Types Fine/ThinClient Results Smoother HairRated 5 out of 5 stars8 months agoBest ever
Silky hair!
Was this helpful?K18Hair PRO8 months agoThank you so much for your incredible review, Amelita! We're absolutely thrilled to hear that our Professional Molecular Repair Mask is giving you that silky hair finish - there's no better compliment than knowing our molecular repair technology is delivering those amazing results!
- HerlindaReviewingProfessional Molecular Repair Mask 150 mL (WHOLESALE)I recommend this productRated 5 out of 5 stars9 months ago5 Stars
Amazing! I love k18
Was this helpful?K18Hair PRO8 months agoThank you for your review! We are thrilled that you are loving the results you are obtaining!
- Kathleen M.Verified BuyerReviewingProfessional Molecular Repair Mask 150 mL (WHOLESALE)I recommend this productAge 55 - 64Client Hair Concerns Heat Damage, Frizz, Dryness, Extending time between washes, Split EndsClient Hair Types Thick/Coarse, Medium Density, Grey Hair, Curly/Coily, Straight/WavyClient Results Less Breakage, Bouncy Hair, Smoother Hair, Stronger hair, Soft Touchable HairRated 5 out of 5 stars9 months agoMask Repair is a game changer
The molecular mask is lightweight mask repair that you leave in. The hair repair instantly softens the hair and works on repairing it. This product is truly a game changer on my clients.
Was this helpful?K18Hair PRO8 months agoThank you so much for your incredible review, Kathleen! We're absolutely thrilled to hear that the Professional Molecular Repair Mask is such a game changer for your clients and that you're seeing such amazing results - it's wonderful how this lightweight leave-in formula can instantly soften hair while working on that deep molecular repair to truly transform your clients' hair health!
- Lourdes C.Verified BuyerReviewingProfessional Molecular Repair Mask 150 mL (WHOLESALE)I recommend this productAge 55 - 64Client Hair Concerns Chemical Damage, Fragile/Brittle Hair, Split Ends, Frizz, Heat DamageClient Hair Types Grey Hair, Thick/Coarse, Fine/Thin, Medium Density, Curly/CoilyClient Results Less Frizz, Stronger hair, Less Breakage, Visible Difference, Shinier HairRated 5 out of 5 stars9 months agoBest product ever
I can start with myself. Never have long hair before I started using this product ! I’ve seen wonders with my clients ! I’ve been doing hair for 40 yrs. And this is the first product that I can say really helps with the breakage in hair. Just love it. I recommend it to all my clients
Was this helpful?K18Hair PRO9 months agoThank you so much for your incredible review, Lourdes! We're absolutely thrilled to hear that the Professional Molecular Repair Mask has helped you achieve the long hair you never had before - what an amazing transformation! Your professional endorsement means the world to us, and we're so happy you're seeing such fantastic results with both yourself and your clients. Thank you for recommending it - we're so happy this is working great for you!





