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NEW: repair + protect K18 minis (includes: detox shampoo, leave-in hair mask, DAMAGE SHIELD shampoo and conditioner, hair oil)
K18 healthy hair routines all mini sizes: detox shampoo, leave-in hair mask, pH protective shampoo, conditioner and oil
healthier hair + scalp after just one wash - detox shampoo
reverse hair damage in 4 minutes - leave-in molecular repair hair mask
biotech-powered K18PEPTIDE restores damaged hair up to 82% virgin strength & elasticity*. image shows hair before + after bleach with K18
Where K18 molecular repair works: cuticle, cortex, polypeptide chains
protect with DAMAGE SHIELD pH shampoo: optimized pH is gentle on damaged hair, certified microbiome-friendly formula is gentle on scalp, formulated with K18PEPTIDE(TM) to maintain hair health, helps reduce frizz, and tangles + promotes shine, made for all hair types + protects color, vegan, cruelty-free + plastic net-zero
DAMAGE SHIELD protective conditioner: protects hair from damage for up to 3 days*, weightlessly detangles hair, maintains hair health for all hair types, fortifies, softens + smooths, enhancers hairs natural shine, vegan, cruelty-free + plastic net zero
one use of molecular repair hair oil delivers: clinically proven damage repair, 24-hr frizz control, 104% more shine, 78% reduction in split ends, and 450F heat protection

repair + protect minis

Limited-time mini routines for healthy hair, every day.
Rated 4.7 out of 5
Based on 43 reviews

$96 value

Mini biotech-powered routines for healthy hair every day of the week. The best way to try K18 routines and take damage repair + protection on-the-go. Includes 2 K18 routines:

  • when you need to repair damage: detox shampoo + leave-in molecular repair hair mask 
  • when you need to protect against daily damage: DAMAGE SHIELD shampoo + conditioner
  • every day: molecular repair hair oil 
OR
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Take the second-guessing out of wash day with these universal K18 routines.

When you need to repair damage:
Start with our color-safe PEPTIDE PREP™ detox shampoo to remove 99% product buildup*, and clear the path for maximum K18 mask results. Reverse damage with our bestselling leave-in molecular repair hair mask for stronger, softer, smoother, bouncier hair in 4 minutes.

When you need to protect against daily damage:
Start with our color-safe DAMAGE SHIELD pH protective shampoo to effectively cleanse while maintaining hair health and protecting hair from damage. Follow with the DAMAGE SHIELD protective conditioner that helps shield hair from UV rays, mechanical styling, and environmental aggressors for up to 3 days* to help maintain hair health. Nourishing, protective formula fortifies, softens, detangles, and improves smoothness + shine.

Everyday:
Finish both routines with the award-winning molecular repair hair oil, a strengthening defrizz solution that softens, adds shine, reduces split ends, and provides 450°F (232°C) heat protection*.

*Disclaimers

PEPTIDE PREP™ detox shampoo removes:

  • 99% of product buildup*
  • 95% of sebum*
  • 76% of copper*

leave-in molecular repair hair mask:

  • Healthier hair in 4 minutes*
  • Reverses hair damage caused by bleach* + color*, chemical services*, and heat*

DAMAGE SHIELD pH protective shampoo:

  • Certified microbiome-friendly by MyMicrobiome Standard
  • 91% said hair looks healthier, smoother + does not feel weighed down*

DAMAGE SHIELD protective conditioner:

  • Clinically proven to provide conditioning protection against damage from UV rays, mechanical styling, and environmental aggressors for up to 3 days*

molecular repair hair oil

  • Clinically proven to repair damaged hair*
  • 24-HR frizz control*
  • 104% more shine*
  • 78% reduction in split ends*
  • 450°F (232°C) heat protection*

    *Disclaimers

Treatment day when you need to repair damage:

Begin with detox shampoo

  1. Massage detox shampoo into hair + scalp to remove excess buildup.
  2. Thoroughly rinse.
  3. Repeat as needed.
  4. Wait to use conditioner until after the mask for optimal repair results.

Apply the leave-in molecular repair hair mask

  1. Towel-dry thoroughly.
  2. Apply 1-3 pumps of K18 leave-in molecular repair hair mask based on your length and density, starting at the ends and working up towards the roots.
  3. Let sit for 4 minutes. Do not rinse out.
  4. Apply conditioner if desired for added smoothness, softness + detangling after using the K18 mask, then 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.

Non-treatment day when you need to protect against daily damage:

Begin with pH protective shampoo

  1. Massage DAMAGE SHIELD pH protective shampoo into hair, focusing on scalp.
  2. Thoroughly rinse.
  3. Repeat as needed.

Follow with protective conditioner

  1. Apply a small amount of DAMAGE SHIELD protective conditioner from mid-lengths to ends and build as needed.
  2. Rinse thoroughly.

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.
  4. 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.

DAMAGE SHIELD pH protective shampoo
Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl 2-Sulfolaurate, Sodium Lauryl Sulfoacetate, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Disodium 2-Sulfolaurate, Caprylyl Glycol, Caprylhydroxamic Acid, Benzoic Acid, Citric Acid, Sodium Hydroxide, Sodium Chloride, Fragrance (Parfum), Limonene.

DAMAGE SHIELD protective conditioner
Water (Aqua) (Eau), Isopropyl Palmitate, Stearyl Alcohol, Propanediol, Isopentyldiol, Behentrimonium Chloride, Tocopherol, Tocopheryl Acetate, sh-Oligopeptide-78, Alteromonas Ferment Extract, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Phospholipids, Jojoba Esters, Calcium Gluconate, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Ceramide NP, Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate, Polyquaternium-16, Stearalkonium Chloride, Isopropyl Alcohol, Butylene Glycol, Gluconolactone, Phenoxyethanol, Sodium Benzoate, Citric Acid, Sodium Hydroxide, Fragrance (Parfum), Hydroxycitronellal.

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.

Description

$96 value

Mini biotech-powered routines for healthy hair every day of the week. The best way to try K18 routines and take damage repair + protection on-the-go. Includes 2 K18 routines:

  • when you need to repair damage: detox shampoo + leave-in molecular repair hair mask 
  • when you need to protect against daily damage: DAMAGE SHIELD shampoo + conditioner
  • every day: molecular repair hair oil 

got questions?

Get started here

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.

*k18hair.com/disclaimers

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’s path. Like layering different skincare products, the oil can be layered on top of the mask without impacting its performance—in fact, they work even better when used together.

No, the formula of the DAMAGE SHIELD pH protective shampoo is not different from the PEPTIDE PREP® pH maintenance shampoo. Just the name has changed, the formulation you know and love is the same.

No, the conditioner does not repair damage like the mask does. This nourishing, protective conditioner shields against 3 types of damage (daily mechanical, UV, and environmental) for up to 3 days*— to help maintain hair health and improve smoothness and shine. Both formulas include the K18PEPTIDE™ with different benefits.

The mask has a higher concentration of the peptide to reverse damage. In the conditioner, the K18PEPTIDE™ replenishes protein lost during washing, while the cuticle is still swollen, to fortify hair health and strength. To get damage repair benefits from the K18PEPTIDE™, use the K18 mask first, wait 4 minutes, then apply the K18 conditioner.

*k18hair.com/disclaimers

For best results, we do not recommend mixing the K18 conditioner with the oil. Use the K18 molecular repair hair oil after the K18 conditioner.

For maximum damage repair benefits from the molecular repair hair oil, we recommend using it without conditioner.
Straight bleached hair after using K18 mask.
Straight bleached hair before using K18 mask.

healthier hair with every use

Reverse damage in 4 minutes with our breakthrough K18 molecular repair technology.

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 4.7 out of 5
Based on 43 reviews
  • 5 Stars
    35 Reviews
  • 4 Stars
    4 Reviews
  • 3 Stars
    3 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    1 Review
91% of reviewers would recommend this product to a friend
Customer photos and videos
43 Reviews
Reviewed by Kelsie C.
Verified Buyer
I recommend this product
Age
25 - 34
Hair Concern
  • Chemical damage
Hair Type
  • Fine/Thin
My Results
  • Less Frizz
  • Visible Difference
  • Smoother Hair
  • Less Breakage
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Perfect little kit!

This was an awesome set to try out the entire hair care line!

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K18Hair

Thank you for your review!

Reviewed by Amber M.
Verified Buyer
I recommend this product
Age
35 - 44
Hair Concern
  • Fragile/brittle hair
Hair Type
  • Medium Density
My Results
  • Cleaner, fresher hair
Rated 5 out of 5
Review posted

Minis - Great for Travel

I recently tried the Repair + Protect minis and found them highly effective. The shampoo cleansed my hair thoroughly without drying it out, while the conditioner provided deep hydration and easy detangling. Both products left my hair feeling softer, smoother, and more resilient. The pleasant fragrance was a nice bonus, and I noticed a visible improvement in the overall health and shine of my hair after just a few uses. Overall, the Repair + Protect minis are an excellent choice for anyone looking to revitalize and strengthen their hair.

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K18Hair

Thank you for your review!

Reviewed by Krystal N.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Chemical damage
  • Fragile/brittle hair
  • Dryness
Hair Type
  • Fine/Thin
My Results
  • Stronger Hair
  • Less Breakage
  • Visible Difference
  • Soft Touchable Hair
  • Cleaner, fresher hair
Rated 5 out of 5
Review posted

Great Product

I experienced hair loss and damage and itchy scalp from all the products I’ve tried. But, once I started using this product I haven’t experienced any itching and my hair is growing back healthy. The shedding stopped as well.

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K18Hair

Thank you for your 5 star review Krystal!

Reviewed by Angie B.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Fragile/brittle hair
  • Dryness
  • Split-Ends
Hair Type
  • Fine/Thin
My Results
  • Visible Difference
  • Stronger Hair
  • Less Breakage
  • Smoother Hair
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Love this kit

I've heard great things about K18 on social media and some friends that love these products. I was a little hesitant to try it as it's a little pricy. SPEND THE MONEY!! I have fine blonde hair that was dry, damaged and limp. I used the repair treatment for 6 consecutive days and my hair is so soft and shiny. My dead dry ends are smooth and my hair has volume and bounce.

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K18Hair

Thank you Angie! We appreciate your review!

Reviewed by Karen
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Perfect way to make sure the products worked with my hair

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K18Hair

We appreciate your review Karen!

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