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damage control duo

Molecular repair set to reverse damage + reduce frizz
Rated 4.7 out of 5
Based on 53 reviews

$102 value

This giftable peptide-powered duo reverses hair damage in 4 minutes, smooths frizz + adds shine to all hair types.

  • Award-winning full-size leave-in molecular repair hair mask repairs hair damage from bleach*, color*, chemical services*, and heat* in just 4 minutes.
  • Best-selling mini molecular repair hair oil fights frizz from within for immediate + long-term frizz control.

*Disclaimers

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more to know

This science-powered set delivers healthier, frizz-free hair in 2 steps.

Begin 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. Finish with the weightless hair oil, a strengthening de-frizz solution that delivers immediate and long-term frizz control, improves shine, and reduces split ends while offering 450°F (232 °C) heat protection*.

*Disclaimers

key benefits

One use of leave-in molecular repair hair mask:
Reverses hair damage caused by bleach*, color*, chemical services*, and heat*

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

how to use

  1. Shampoo, do not condition. 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. Wait 4 minutes before styling or adding product.
  4. Follow with 1-3 drops of K18 molecular repair hair oil to damp hair, starting at the ends and working upward through the mid-lengths.
  5. Wait 4 minutes. Style as usual.
  6. Apply an additional 1-3 drops of K18 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.

ingredients

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

PEPTIDE PREP™ detox shampoo

Rated 4.8 out of 5
Based on 223 reviews
Color-safe, non-stripping clarifying shampoo with the K18PEPTIDE™ View PEPTIDE PREP™ detox shampoo 8.5oz product

Description

$102 value

This giftable peptide-powered duo reverses hair damage in 4 minutes, smooths frizz + adds shine to all hair types.

  • Award-winning full-size leave-in molecular repair hair mask repairs hair damage from bleach*, color*, chemical services*, and heat* in just 4 minutes.
  • Best-selling mini molecular repair hair oil fights frizz from within for immediate + long-term frizz control.

*Disclaimers

got questions?

Get started here

How do the molecular repair hair mask and oil work together?

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.

Will the mask block the molecular repair hair oil from penetrating?

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.

Can I mix the oil and mask together?

Instead of mixing the oil and mask together, get the most effective repair and styling benefits by using the mask first, waiting 4 minutes, and then applying the oil.

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.

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
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 53 reviews
  • 5 Stars
    45 Reviews
  • 4 Stars
    2 Reviews
  • 3 Stars
    3 Reviews
  • 2 Stars
    3 Reviews
  • 1 Star
    0 Reviews
89% of reviewers would recommend this product to a friend
Customer photos and videos
53 Reviews
Reviewed by April H.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Chemical damage
  • Dryness
Hair Type
  • Thick/Coarse
My Results
  • Less Frizz
  • Stronger Hair
  • Smoother Hair
  • Less Breakage
  • Shinier Hair
Rated 5 out of 5
Review posted

K18 made a big difference in my hair texture!

I love these products. I have very dry hair and it helped soften my hair and makes it looks much healthier .

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

5 Stars

Love! Love! Love! Love!

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

5 Stars

10 out of 10 my hair was breaking off after cotton treatment within two washes and using this product, it bring back my hair. Just wish they made a bigger bottle for the ear oil and the treatment. The treatment really doesn’t last that long. 

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Reviewed by Alexandra L.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Chemical damage
  • Frizz
  • Fragile/brittle hair
  • Dryness
  • Color-care
Hair Type
  • Fine/Thin
  • Straight/Wavy
  • Grey Hair
My Results
  • Less Frizz
  • Visible Difference
  • Bouncy Hair
  • Smoother Hair
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Damage control duo

My hair looks with less frizz, soft and healthy.

Excellent products.

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K18Hair

Thank you Alexandra for your review!

Reviewed by Deb S.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Chemical damage
Hair Type
  • Fine/Thin
My Results
  • Visible Difference
  • Less Breakage
  • Shinier Hair
  • Smoother Hair
Rated 5 out of 5
Review posted

Incredible

This duo is the ON LY product that visually works IMMEDIATELY for eliminating damage and adding body and shine, not kidding. I was completely blown away.

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K18Hair

You're Incredible! Thank you for your review Deb!

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