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detox + repair anywhere

Travel-friendly mini duo to clarify buildup + reverse damage
Rated 4.6 out of 5
Based on 27 reviews

$43 Value

Get maximum damage repair with this mini detox + repair duo.

  • Mini PEPTIDE PREP™ detox shampoo removes buildup + metals, clearing the path for maximum molecular repair results.
  • Award-winning mini leave-in molecular repair hair mask repairs hair damage from bleach*, color*, chemical services*, and heat* in just 4 minutes.

*Disclaimers

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more to know

Get started on damage repair with our travel-friendly biotech bestsellers.

Start with K18 color-safe detox shampoo to clear product buildup and excess oil + metals common in tap and hard water with a color-safe, pH-optimized formula that won't leave hair over-stripped or easily tangled. Follow with the damage repair leave-in treatment that helps repair hair damage from bleach* + color*, chemical services*, and heat* in just 4 minutes—restoring strength, softness, smoothness, and bounce.

*Disclaimers

key benefits

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:
Reverses hair damage caused by bleach*, color*, chemical services*, and heat*

*Disclaimers

how to use

  1. Massage K18 PEPTIDE PREP™ detox shampoo into hair + scalp to remove excess buildup.
  2. Thoroughly rinse.
  3. Repeat as needed.
  4. Do not condition. Towel-dry thoroughly.
  5. Apply 3-9 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.
  6. Wait 4 minutes before styling or adding product. Do not rinse out.
  7. Use K18 leave-in molecular repair hair mask for 4-6 washes, then as needed.

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

ingredients

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, Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool.

pairs well with

K18 molecular repair hair oil

Rated 4.7 out of 5
Based on 434 reviews
Weightless oil that strengthens, repairs damage + reduces frizz View Molecular Repair Hair Oil product

Description

$43 Value

Get maximum damage repair with this mini detox + repair duo.

  • Mini PEPTIDE PREP™ detox shampoo removes buildup + metals, clearing the path for maximum molecular repair results.
  • Award-winning mini leave-in molecular repair hair mask repairs hair damage from bleach*, color*, chemical services*, and heat* in just 4 minutes.

*Disclaimers

got questions?

Get started here

Is K18 mask considered a protein?

No, the K18 mask is not a protein treatment. Our biomimetic peptide naturally mimics the amino acid sequences in keratin to rebuild bonds broken by bleach* + color*, chemical services*, and heat* damage. If you are experiencing dry, brittle hair, use K18 PEPTIDE PREP™ detox shampoo pre-K18 mask to remove buildup. *Disclaimers

Why skip conditioner?

Conditioner leaves a film that blocks our peptide from penetrating effectively. Once the 4-minute wait time is up, feel free to use a conditioner, a leave-in, or any type of product.

Will the detox shampoo dry my hair out?

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

Will the detox shampoo strip color?

No, the detox shampoo will not strip your color. This color-safe formula is optimized with pH 3.8-4.2 to help maintain your color, and uniquely targets common metals present in tap and hard water that can cause dullness.

What is the K18PEPTIDE™?

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.
Image Comparison Drag Handle
see molecular repair in action
The K18 leave-in molecular repair hair mask delivers lasting + progressive results, for healthier hair with each use.

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 4.6 out of 5
Based on 27 reviews
  • 5 Stars
    22 Reviews
  • 4 Stars
    2 Reviews
  • 3 Stars
    2 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    1 Review
89% of reviewers would recommend this product to a friend
Customer photos and videos
27 Reviews
Reviewed by Leslie M.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Chemical damage
  • Dryness
  • Split-Ends
  • Color-care
  • Heat damage
Hair Type
  • Fine/Thin
My Results
  • Stronger Hair
  • Less Breakage
  • Smoother Hair
  • Less Frizz
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

My saviors

These products have saved my hair!! I have fine color-treated hair and the ends just get damaged. But after using the repair leave in treatment, my ends are soooo much better!! The detox shampoo is great too, have to get all the product off. I use it once a week. Great products

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K18Hair

Thank you Leslie! We appreciate your review!

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

5 Stars

I absolutely love this product, I just wish it wasn’t so expensive. My beautician recommended it to me and all I could afford was the 1.8 fl oz shampoo and conditioner which cost me over $40.

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K18Hair

Thank you for your review Susan!

Reviewed by Crystal A.
Verified Buyer
I recommend this product
Age
25 - 34
Hair Concern
  • Chemical damage
  • Heat damage
  • Frizz
  • Fragile/brittle hair
Hair Type
  • Medium Density
My Results
  • Visible Difference
  • Less Breakage
  • Shinier Hair
  • Cleaner, fresher hair
Rated 5 out of 5
Review posted

Such a game changer

So as back story my hair has always been super fragile to Color, buuuut I decided to try it again after having to cut off my hair multiple times in my life bc of damage. (I know, ridiculous) however this time I tried k18. Number one, the shampoo makes my hair and scalp feel soo much cleaner. And the mask makes my hair much softer and smoother looking when dry. I’ve definitely had less breakage as well. For hair as damaged as mine it’s hard to not condition my hair and then get the mask through my hair and THEN brush it. It takes me a while. So just keep that in mind. You’ll get frustrated but it definitely makes a difference!

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K18Hair

Thank you for your review Crystal!

Reviewed by Stephanie
I don't recommend this product
Rated 1 out of 5
Review posted

1 Star

Hate it! Didn’t help my hair at all

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K18Hair

Would love to assist you with troubleshooting to get you results you would love. Reach out with us directly.

Reviewed by adrienne t.
Verified Buyer
I recommend this product
Age
65+
Hair Concern
  • Fragile/brittle hair
Hair Type
  • Fine/Thin
My Results
  • Less Breakage
Rated 5 out of 5
Review posted

Really works

Been using 2weeks.....I was told about it by a hairdresser, but then another hairdresser never heard about it...IT WORKS ....Ii worked the first time and I use it 1x week...(black hair) if it matters

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K18Hair

Thank you for your review!

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