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damage repair essentials
step 1. prep for repair
clarify hair + scalp: just one wash removes 99% product buildup, 95% sebum + 76% copper*
scalp camera closeup detox shampoo before + after
step 2. repair
maximize your repair
get stronger, more resilient hair
step 3. repair damage to fight frizz
78% reduction in split ends*
highly concentrated formula: start with 1-3 drops, build as needed.
works for all hair types
Where K18 molecular repair works

damage repair essentials

Travel-friendly mini trio solves damage + frizz from the inside out
Rated 5.0 out of 5
Based on 2 reviews

Kickstart cleaner, stronger, smoother hair for all hair types with award-winning, peptide-powered breakthroughs.

  • PEPTIDE PREP™ detox shampoo removes buildup + metals to help K18 mask reach the innermost layers of your hair.

  • Leave-in molecular repair hair mask repairs damage inside + out in just 4 minutes. 

  • Molecular repair hair oil fights frizz from within for immediate + long-term frizz control.

OR
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This 3-step mini set solves damage + frizz from the inside out with K18-patented biotechnology.

Start with our color-safe detox shampoo to clarify product buildup, excess oil + metals. Follow with the leave-in molecular repair hair mask to reverse bleach* + color*, chemical services* + heat* damage in 4 minutes. Finish with the weightless molecular repair hair oil to defrizz, soften, add shine + provide 450°F (232°C) heat protection*.

*Disclaimers

Just one use of PEPTIDE PREP™ detox shampoo removes*:
99% of product buildup
95% of sebum
76% of copper

One use of leave-in molecular repair hair mask delivers*: Healthier hair in 4 minutes

One use of molecular repair hair oil delivers*:
Clinically proven damage repair
24-HR frizz control
104% more shine
78% reduction in split ends
450°F (232°C) heat protection

*Disclaimers

Begin with detox shampoo

  1. Massage detox shampoo into hair + scalp to remove excess buildup.
  2. Thoroughly rinse.
  3. Repeat as needed.
  4. Skip conditioner.

Apply the leave-in molecular repair hair mask

  1. Towel-dry thoroughly.
  2. Begin with 3 pumps of K18 leave-in molecular repair hair mask and add more as needed. Maximum recommended usage is 9 pumps.
  3. Apply all over, 1 pump at a time.
  4. Let sit for 4 minutes. Do not rinse out.

Finish with the molecular repair hair oil

  1. Apply 1-3 drops of molecular repair hair oil to damp hair, starting at the ends and working upward through the mid-lengths.
  2. Wait 4 minutes. Style as usual.
  3. Apply an additional 1-3 drops of molecular repair hair oil to dry hair as a finisher.

A little goes a long way with our highly concentrated formulas. Start with the minimum recommended amount + build as needed.

PEPTIDE PREP™ detox shampoo
Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Hydroxysultaine, Salicylic Acid, Charcoal Powder, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, GuarHydroxypropyltrimonium Chloride, Caprylyl Glycol, Caprylhydroxamic Acid, Citric Acid, Potassium Hydroxide, Sodium Hydroxide, Fragrance (Parfum), Benzyl Salicylate, Limonene.

leave-in molecular repair hair mask
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78 (K18PEPTIDE™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.

molecular repair hair oil
Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool.

pairs well with

AirWash™ dry shampoo

Rated 4.5 out of 5
Based on 361 reviews
Revolutionary dry shampoo reduces oil + odor—weightlessly.

DAMAGE SHIELD protective conditioner

Rated 4.6 out of 5
Based on 166 reviews
Nourishing conditioner shields hair from daily damage

Description

Kickstart cleaner, stronger, smoother hair for all hair types with award-winning, peptide-powered breakthroughs.

  • PEPTIDE PREP™ detox shampoo removes buildup + metals to help K18 mask reach the innermost layers of your hair.

  • Leave-in molecular repair hair mask repairs damage inside + out in just 4 minutes. 

  • Molecular repair hair oil fights frizz from within for immediate + long-term frizz control.

got questions?

Get started here

Yes, it is better to use the full K18 routine for optimal service and molecular repair results.

To achieve the best cumulative results, we recommend using these routines:
when you need to repair damage: detox shampoo + mask
when you need to protect against daily damage: DAMAGE SHIELD shampoo + conditioner
every day: molecular repair hair oil
between wash days: AirWash™ dry shampoo

Before K18 molecular repair mask or oil, our PEPTIDE PREP™ detox shampoo tackles buildup + metals to create the cleanest, healthiest hair canvas. With our molecular repair formulas, you get maximum damage repair plus additional styling benefits with the oil. Use the DAMAGE SHIELD shampoo + conditioner to protect hair from daily damage between K18 mask days—and keep healthy hair going in-between salon appointments. Use AirWash™ dry shampoo to refresh hair between washes with an instant, weightless clean.

No, the detox shampoo will not dry your hair out. This non-stripping formula has a pH of 3.8-4.2 that won’t leave hair over-stripped. In a consumer study, 90%* said hair feels clean without feeling dry. *Disclaimers

The molecular repair hair mask and oil work together to give you the reparative benefits of the K18PEPTIDE™ in both formulas. The oil will add additional frizz-reducing, styling, and heat-protecting properties. You can layer the oil on top of the mask after the 4-minute processing time.

No, the mask will not block the molecular repair hair oil from penetrating. The mask is a highly concentrated treatment without any fillers so it won’t block the oil from penetrating. Like layering different skincare products, the oil can be layered on top of the mask without impacting its performance.

Our biomimetic peptide mimics hair’s natural structure to seamlessly fit in and reconnect broken keratin chains responsible for hair’s core strength and elasticity. As a result of this reconnection it also addresses cleaved disulfide bonds for connection along the Y-axis of hair AND the X-axis or width of hair.
Straight bleached hair after using K18 mask.
Straight bleached hair before using K18 mask.

see molecular repair in action

The K18 leave-in molecular repair hair mask delivers lasting + progressive results, for healthier hair with each use.

the K18 difference

Feel what’s possible with fewer steps, less waste + less time.
efficacy
patented K18PEPTIDE™ powers deeper + lasting repair.
simplicity
fewer steps for a streamlined routine.
speed
results in one 4-minute use.

how molecular repair compares

how K18 works

Traveling into the innermost layers of hair, our K18PEPTIDE™ renews strength along the width AND length of hair for lasting strength where it matters.

reviews

average rating 5.0 out of 5
Based on 2 reviews
  • 5 Stars
    2 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
2 Reviews
Reviewed by Sharyn
Verified Reviewer
I recommend this product
Age
65+
Hair Concern
  • Frizz
  • Fragile/brittle hair
  • Dryness
  • Split-Ends
  • Chemical damage
Hair Type
  • Medium Density
  • Curly/Coily
  • Grey Hair
My Results
  • Less Frizz
  • Visible Difference
  • Stronger Hair
  • Less Breakage
  • Smoother Hair
Rated 5 out of 5
Review posted

This is the one…

This is the one to use for any hair type any type of problem. When I saw that I did not use conditioner after the shampoo, I was a little nervous because my hair tangled something terrible. After one wash I could tell it was not tangled hair loss was minimal. I usually have some hairs that I lose during shampooing .i had to use 4 pumps of the mask. Very long hair and tangle free! Felt 100% healthier. Pls people invest in these products. Sincerely the best. Happy customer!

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K18Hair

Thank you Sharyn! We appreciate your review!

Reviewed by Makayla S.
Verified Reviewer
I recommend this product
Age
18 - 24
Hair Concern
  • Chemical damage
  • Heat damage
  • Fragile/brittle hair
  • Split-Ends
Hair Type
  • Medium Density
  • Straight/Wavy
My Results
  • Less Frizz
  • Visible Difference
  • Stronger Hair
  • Less Breakage
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Yall….

Okay I purchased this kit yesterday because my hair is so damaged but I am in the middle of a color correction so I need my hair repaired. Before I used this, my ends were snapping off and the breakage was embarrassing. I thought my hair was ruined. Then I used this kit. Yall when I tell you my hair looks and feels like it did when I was a teenager and it was truly healthy, I mean it. K18 saved my hair. This product line is amazing and a true miracle. I noticed results after one wash and I’m so excited to see how much better it gets over time!

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K18Hair

Thank you for your 5 star review Makayla!

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AirWash™ dry shampoo
Rated 4.5 out of 5
Based on 361 reviews
Revolutionary dry shampoo reduces oil + odor—weightlessly.
full-size leave-in molecular repair hair mask
Rated 4.6 out of 5
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4-minute leave-in treatment to reverse hair damage
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