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Deal.ai › K18
K18
K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist

K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist

4.6(25 ratings)

Best price now

$90.00at eBayChecked 1 h ago

45% under what the other stores charge

Compared across 13 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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K18 discount codes →

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Price facts

  • Lowest price today: $90.00 at eBay (checked Nov 12, 2026).
  • Checked at 13 stores.

Our take on the K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist

The K18 Pro Molecular Repair Hair Mist is a pre-service treatment sprayed on before bleach, color or other chemical services. Its pH of 7.5–8.0 shifts the cuticle so the K18Peptide reaches the cortex and targets damage sites, and K18 claims clinically proven damage reversal in about 4 minutes. It suits people booking salon chemical work or doing it at home who want to limit the damage, and it is a different product from the leave-in K18 mask: this one is a prep step, not a daily conditioner. Reviewers rate it highly for how hair feels after coloring, though some find the spray format and the number of steps fussy.

Best forPrepping hair before bleach or colorSalon chemical service clientsHeat- and mechanically damaged hairAnyone adding K18 to a color appointment
Pros
  • Targets damage at the cortex, not just the surface
  • Designed specifically as a pre-service step
  • Works against bleach, color, heat and mechanical damage
  • K18Peptide is the same molecule as the brand's repair mask
  • Light mist format is easy to apply before a service
Cons
  • Only useful around chemical services, not as a daily product
  • Adds a step and wait time to a salon visit
  • Spray application can be uneven on thick hair
  • Small bottle goes fast on long hair

K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist prices at every store

  • WalmartNew

    In stockSold by Beauty Guarantee

    $99.57Free shippingChecked 1 h ago
    Visit Walmart
  • FragranceNet.comNew

    In stock

    $137.99Free shippingChecked 1 h ago
    Visit FragranceNet.com
  • eBayNew

    Availability unknown

    $90.00Checked 1 h ago
    Visit eBay
  • Pandora BeautyNew

    Availability unknown

    $158.99Checked 1 h ago
    Visit Pandora Beauty
  • RueLaLaNew

    Availability unknown

    $159.99Checked 1 h ago
    Visit RueLaLa
  • Bombshell Hair and Beauty StudioNew

    Availability unknown

    $160.00Checked 1 h ago
    Visit Bombshell Hair and Beauty Studio
  • LEntrepot de la CoiffureNew

    Availability unknownMade for another market

    $163.00Checked 1 h ago
    Visit LEntrepot de la Coiffure
  • Gilt.comNew

    Availability unknown

    $179.99Checked 1 h ago
    Visit Gilt.com
  • The Warehouse SalonNew

    Availability unknown

    $190.00Checked 1 h ago
    Visit The Warehouse Salon
  • Anita Kurl SalonNew

    Availability unknown

    $209.00Checked 1 h ago
    Visit Anita Kurl Salon
  • Beauty Plus SalonNew

    Availability unknown

    $230.00Checked 1 h ago
    Visit Beauty Plus Salon
  • Hair DynamicsNew

    Availability unknown

    $244.77Checked 1 h ago
    Visit Hair Dynamics
  • TargetNew

    Out of stock

    $116.42Free shippingChecked 1 h ago
    Visit Target

Also available at

  • European Beauty by BCheck price at European Beauty by B

Store links may earn us a commission.

K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist price history

Lowest price we've seen: $90.00 on Nov 13 at eBay. Tracked across 13 stores since Nov 13.

What reviewers say

  • 4.6 / 525 ratings

With 25 ratings averaging 4.6 out of 5, owners largely report stronger, softer hair after chemical services when the mist is used as directed. Complaints center on the extra step and on how quickly the bottle runs out.

What people mention
  • Damage repairPraisedOwners say hair feels stronger and less damaged after bleach and color services.
  • SoftnessPraisedReviewers report smoother, softer hair with more bounce after use.
  • ApplicationMixedThe spray is easy to use, but some find coverage uneven on thick or long hair.
  • ValueCriticisedSome say the bottle runs out fast, especially on long hair.
  • RoutineMixedIt works, but adds a step and wait time around a salon service.

About the K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist

K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist is a pre-service treatment that strengthens hair before a chemical service. It has a pH of 7.5-8.0, which shifts the cuticle layer so the formula can penetrate into the hair's cortex and target damage sites.

It is made with K18Peptide and is clinically proven to reverse damage in 4 minutes. It repairs hair from the inside out. It targets damage from bleach, color, chemical services, heat and mechanical styling, and restores strength, softness, smoothness and bounce.

Type
Pre-service molecular repair hair mist
Size
1 oz
pH
7.5-8.0
Key ingredient
K18Peptide
Repairs damage from
Bleach, color, chemical services, heat, mechanical styling
Benefits
Restores strength, softness, smoothness and bounce

Specifications

actual_color
1ooz professional molecular repair hair mist
color
1ooz professional molecular repair hair mist
size
8.150

Questions and answers

Is this the same as the K18 leave-in mask?
No. This is a pre-service mist applied before chemical services. The K18 leave-in mask is a separate after-wash treatment.
How do I use it?
Spray it on dry hair before a bleach, color or chemical service, let it sit as directed, then proceed with the service. It is not a daily leave-in.
Will it fix already damaged hair?
K18 says the peptide targets damage sites and restores strength and softness. It is designed to limit and repair damage, not to replace trims for split ends.
Can I use it at home?
Yes, it can be sprayed before an at-home color or bleach session, though salon professionals typically apply it as part of a service.
Does it work on all hair types?
It is aimed at hair damaged by bleach, color, heat or mechanical styling. Curly, coily and straight hair can all use it, but coverage takes more sprays on dense hair.
What is in the box?
A single spray bottle of the Pro Molecular Repair Hair Mist.
Where is the K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist cheapest?
At eBay, for $90.00, 45% under what the other stores charge, as of our latest check.
What do buyers say about the K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist?
Rated 4.6 out of 5 from 25 ratings.
Where can I buy the K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist?
14 stores we checked sell it, including eBay, Walmart, Target, FragranceNet.com, Pandora Beauty.

Stores we've priced the K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist at

  • Beauty Plus Salon deals and prices
  • FragranceNet.com deals and prices
  • Gilt.com deals and prices
  • Pandora Beauty deals and prices
  • RueLaLa deals and prices
  • Target deals and prices
  • Walmart deals and prices
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