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next-level repair trio

Limited-edition giftable set that keeps hair healthy
Rated 5.0 out of 5
Based on 2 reviews
Keep your holiday hair transformation going with this giftable, 3-step routine—engineered to clarify, repair, and smooth all hair types.
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more to know

PEPTIDE PREP™ detox shampoo

  • A non-stripping, color-safe, pH-optimized lather works to unclog hair follicles while banishing dirt, oils, common metals like nickel, cadmium, lead, zinc, and iron from hard and tap water, and things left behind from heavy product buildup.
  • Intentional formulation means no fillers or deposits left behind leaving the cleanest canvas for maximum K18 molecular repair leave-in treatment results.

leave-in molecular repair hair mask

  • A leave-in treatment mask for all hair types that reverses damage in 4 minutes. Helps to maintain your hair strength and elasticity.
  • Patented K18PEPTIDE™ technology works to repair damage from bleach* + color*, chemical services* and heat*—restoring strength, softness, smoothness, and bounce to hair.

molecular repair hair oil

  • Biotech-engineered weightless oil works on all hair types to strengthen, repair damage, reduce frizz at two levels of the hair fiber, and improve shine.
  • The K18PEPTIDE™ reverses frizz-causing damage long-term at the molecular level. Natural oils work past the cuticle layer to reduce frizz + flyaways, and enhance shine and color vibrancy without weighing hair down.

*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 delivers:

  • Healthier hair in 4 minutes*
  • 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

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

*Disclaimers

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, 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™ pH maintenance shampoo 8.5ozPEPTIDE PREP™ pH maintenance shampoo 8.5oz

PEPTIDE PREP™ pH maintenance shampoo

Rated 4.6 out of 5
Based on 160 reviews
Color-safe, pH-optimized cleansing shampoo formulated with K18PEPTIDE™ View PEPTIDE PREP™ pH maintenance shampoo 8.5oz product

Description

Keep your holiday hair transformation going with this giftable, 3-step routine—engineered to clarify, repair, and smooth all hair types.
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.

the experts know

Groundbreaking PRO stylists, scientists + beauty experts have unlocked new levels of expression with K18 molecular repair.

got questions?

Get started here

Is it better to use the full K18 routine?

Yes, the K18 routine was engineered to deliver your cleanest, healthiest hair for optimal molecular repair results. Before the mask and oil, our PEPTIDE PREP™ category tackles every kind of buildup to create your cleanest, healthiest hair canvas. With our molecular repair formulas, you get maximum damage repair plus additional styling benefits with the oil.

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

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.

Is the K18PEPTIDE™ in every K18 product?

K18 molecular repair + PEPTIDE PREP™ shampoos are formulated with the K18PEPTIDE™. In our molecular repair products, the peptide works at the innermost layers to reverse hair damage. In our PEPTIDE PREP™ shampoos, the peptide helps reduce protein loss to help keep hair feeling healthy and strong.
reviews
average rating 5.0 out of 5
Based on 2 reviews
  • 5 Stars
    2 Reviews
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100% of reviewers would recommend this product to a friend
2 Reviews
Reviewed by Erin Rose A.
Verified Buyer
I recommend this product
Age
35 - 44
Client Hair Concerns
  • Chemical Damage
  • Fragile/Brittle Hair
  • Color Care
Client Hair Types
  • Fine/Thin
Client Results
  • Less Frizz
  • Visible Difference
  • Stronger hair
  • Less Breakage
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Great for travel

Bought this for a vacation where I knew I’d be in and out of pools and the ocean. This kept my hair soft and manageable without stripping my color.

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K18Hair

Hope you had a great vacation! Thank you for your review Erin Rose!

Reviewed by Anita C.
Verified Buyer
I recommend this product
Age
55 - 64
Client Hair Concerns
  • Color Care
  • Frizz
  • Fragile/Brittle Hair
  • Heat Damage
  • Dryness
Client Hair Types
  • Fine/Thin
  • Thick/Coarse
  • Grey Hair
  • Medium Density
  • Straight/Wavy
Client Results
  • Defined Curl/Wave Pattern
  • Smoother Hair
  • Shinier Hair
  • Stronger hair
  • Visible Difference
Rated 5 out of 5
Review posted

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K18Hair

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