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molecular repair hair oil

Weightless oil that strengthens, repairs damage + reduces frizz
Rated 4.8 out of 5
Based on 253 reviews
30 mL

This 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.

  • clinically proven damage repair
  • 24-HR frizz control
  • 104% more shine
  • 78% reduction in split ends
  • 450°F (232°C) heat protection

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more to know

Strengthening, smoothing hair oil works on two levels of the hair fiber to fight frizz.

The K18PEPTIDE™ works to address deeper-level damage that causes frizz—repairing and strengthening damage at the innermost layer of hair to reverse damage that leads to frizz.

On the surface of hair, natural oils like avocado and sunflower oil, and hemisqualane and squalane nourish while smoothing frizz + flyaways to improve color vibrancy, enhance shine, and provide 450°F (232°C) heat protection.

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

*Disclaimers

key benefits

This silicone-free oil fights frizz differently by addressing the damage that causes frizz long-term and immediately smoothing frizz + flyaways.

  • Reverses frizz-causing damage: Works at the molecular level to repair damaged hair, which is more susceptible to frizz
  • Reduces frizz + flyaways: Natural oils work on the surface of the hair to smooth the cuticle + soften without weighing hair down
  • Enhances shine + color vibrancy: Nourished, moisturized hair reflects higher shine and boosts color dimension
  • Delivers heat protection: to prevent further frizz-causing damage up to 450°F (232°C)

how to use in the salon

Apply to damp, towel-dried hair before styling, or on dry hair as a finisher. Highly concentrated formula. Start with 1-3 drops and build as needed.

Use on damp hair for: strengthening benefits and to reduce frizz during air-dry or styling

Use on dry hair to: smooth frizz and flyaways, as a finisher to add shine

For Stylist Use

Begin with PRO chelating hair complex:

  1. Section dry hair into 4 quadrants.
  2. Apply 6-10 sprays of K18 pro chelating hair complex per quadrant*.
  3. Wait 4 minutes after chelating (do not rinse out)

Apply the PRO molecular repair hair mist:

  1. Apply a minimum of 10 full sprays of K18 professional molecular repair hair mist to each quadrant, increasing up to 20 sprays per quadrant as needed, depending on client’s length, density, and level of damage.
  2. Wait 4 minutes (do not rinse out). If needed, dry the hair prior to applying lightener or color. Then perform your desired technique.

Apply the PRO molecular repair hair mask:

  1. Shampoo (do not condition) and towel dry thoroughly.
  2. Apply 1-3 pumps of K18 professional molecular repair hair mask based on your client’s length and density, starting at the ends and working up towards the roots.
  3. Let sit for 4 minutes (do not rinse out).

Finish with the molecular repair hair oil

  1. Apply 1-3 drops of K18 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 K18 molecular repair hair oil to dry hair as a finisher.

*For cases of extreme metal + mineral buildup, process up to 10 minutes, then proceed with the instructions.

**For best results, we recommend to use K18 chelator before every service. If not using K18 chelator, lightly dampen hair with water (do not saturate) before applying K18 PRO mist.

Pro Tip - If using the K18 molecular repair mask, apply the mask first on clean, damp hair, then wait 4 minutes. Apply the molecular repair hair oil, and wait 4 minutes for maximum strengthening results.

for client use

Highly concentrated formula. Start with 1-3 drops and build as needed.

  • Apply to damp hair from mid-lengths to ends. For strengthening benefits from the K18PEPTIDE™ wait 4 minutes before styling.
  • Apply to dry hair as a finisher.

Pro Tip - Got the K18 molecular repair mask? Use the mask first on clean, damp hair, then wait 4 minutes. Apply the molecular repair hair oil, and wait 4 minutes for maximum strengthening results.

ingredients

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

K18REPAIR™ service

Rated 4.9 out of 5
Based on 1709 reviews
2-step PRO mist + mask service reverses damage in 4 minutes View K18 molecular repair service (WHOLESALE) product Log In / REGISTER

Description

This 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.

got questions?

Get started here.

Does the molecular repair hair oil work on all hair types?

Yes, the molecular repair hair oil works on all hair types.

Does the molecular repair hair oil provide heat protection?

Yes, this oil provides heat protection up to 450°F/232°C.

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 that would block the oil from penetrating. Like layering different skincare products, the oil can be layered on top of the mask without impacting its performance.

Will the molecular repair hair oil leave buildup or weigh down hair?

No, it will not leave buildup or weigh down hair. This weightless oil is powered by intentional ingredients to reduce frizz-causing damage on the molecular level inside the hair fiber, while natural oils work on the surface of hair without weighing it down.

Plus, you don’t need much of this highly concentrated formula to see results, just use 1-3 drops and build as needed. If you or your clients are concerned about buildup, use our detox shampoo to remove 99% of product buildup after just 1 wash*.
*Disclaimers

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.

how to use + sell it

  • how to use
  • how to sell the oil to clients
PRO stylist + educator Carly Zanoni shows you how to use the molecular repair hair oil to strengthen and smooth your hair + your client’s.
PRO stylist + educator Eric Vaughn chats his favorite things about the molecular repair hair oil + why every client needs it.

plays well with others

The molecular repair hair oil works on its own and can be paired with the molecular repair service.
what's the difference?
Think of the molecular repair service as damage repair treatments used before and after services. The oil is for smoothing, styling, and strengthening after the mask, and can be used on damp and dry hair.
why wouldn't I just use the oil?
We recommend using the oil with the molecular repair service to get maximum molecular repair results with additional styling benefits.
when would I use both?
Use the molecular repair service pre and post-salon service to reverse hair damage in 4 minutes. You can layer the oil on top of the mask after the 4-minute processing time for additional frizz-reducing, styling, and heat-protecting properties.
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We have K18 experts on standby to answer allll your product and order questions.

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 4.8 out of 5
Based on 253 reviews
  • 5 Stars
    218 Reviews
  • 4 Stars
    22 Reviews
  • 3 Stars
    7 Reviews
  • 2 Stars
    4 Reviews
  • 1 Star
    2 Reviews
95% of reviewers would recommend this product to a friend
Customer photos and videos
253 Reviews
Reviewed by Rita G.
Verified Buyer
mini molecular repair hair oil
Reviewing
mini molecular repair hair oil
I recommend this product
Age
65+
Hair Concern
  • Chemical damage
  • Split-Ends
  • Color-care
  • Frizz
Hair Type
  • Medium Density
My Results
  • Less Frizz
  • Bouncy Hair
  • Visible Difference
  • Stronger Hair
  • Shinier Hair
Rated 5 out of 5
Review posted

Perfect Oil

No greasy, or oily or weird in any way. A little goes a long way. I add to dry hair after blow drying and also sometimes before I blow dry. Perfection. Two drops is all you need and I have long hair.

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K18Hair PRO

Thank you Rita for your review!

Reviewed by Katiuska G.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Color-care
Hair Type
  • Medium Density
  • Straight/Wavy
My Results
  • Stronger Hair
  • Smoother Hair
  • Soft Touchable Hair
  • Oil absorbed
  • Visible Difference
Rated 5 out of 5
Review posted

I love it !

I’m in love with my k18 Molecular Repair oil. The oil disappears, no oils residue behind. The best hair oil in the market !

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K18Hair PRO

Thank you for your review!

Reviewed by Yvonne L.
Verified Buyer
mini molecular repair hair oil
Reviewing
mini molecular repair hair oil
I recommend this product
Age
55 - 64
Hair Type
  • Fine/Thin
My Results
  • Less Frizz
  • Visible Difference
  • Smoother Hair
Rated 5 out of 5
Review posted

A little goes along way.

Love the way it leaves my hair after I blow dry it. Not frizzy and looks shiny. Just barely started using it and I can tell the difference. I have fine hair and other oils are heavy on my hair and have to wash it the next day. So far this one does not.

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K18Hair PRO

A little goes a long way with us! Thank you for your review!

Reviewed by Jennifer S.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Frizz
  • Dryness
  • Split-Ends
Hair Type
  • Medium Density
  • Straight/Wavy
My Results
  • Less Frizz
  • Visible Difference
  • Shinier Hair
  • Smoother Hair
  • Stronger Hair
Rated 5 out of 5
Review posted

LOVE this product!

The molecular hair oil has taken my hair to a whole new level. My hair has zero frizz and is super thick now! I have lots of shine and my hair looks healthy all the way down to the ends. I can’t wait to try the other products.

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K18Hair PRO

0 Frizz is a celebration! Thank you Jennifer for your review!

Reviewed by Riley R.
Verified Buyer
I recommend this product
Age
18 - 24
Client Hair Concerns
  • Chemical Damage
  • Heat Damage
  • Color Care
  • Frizz
  • Fragile/Brittle Hair
Client Hair Types
  • Fine/Thin
Client Results
  • Visible Difference
  • Stronger hair
  • Soft Touchable Hair
  • Shinier Hair
  • Smoother Hair
Rated 5 out of 5
Review posted

Life changing product

Ever since using the k18 line my hair has changed completely. I’m a bleach and tone blonde so I am ALWAYS looking for products to enhance the health of my hair. This has done that and so much more my hair feels the healthiest it’s ever felt

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K18Hair PRO

Healthy hair is in! Thank you for your review Riley!

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