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PEPTIDE PREP™ pH maintenance shampoo

Back bar size of our color-safe, pH-optimized shampoo with K18PEPTIDE™
Rated 4.6 out of 5
Based on 150 reviews

Un champú con pH optimizado que no daña el color con el K18PEPTIDE™ patentado para limpiar de manera efectiva mientras mantiene la salud del cabello, reduce el encrespamiento y los enredos, preserva el color y realza el brillo.

  • 17 ingredients + patented peptide 17 ingredients + patented peptide
  • microbiome-friendly microbiome-friendly
  • pH-optimized pH-optimized

Professional Only

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Cada compra apoya los esfuerzos de K18 x Plastic Bank para simplificar radicalmente los desechos.
En 2022 paramos
147 toneladas métricas de plástico
=
Más de 7,3 millones de botellas de plástico de un solo uso evitan que lleguen al océano

more to know

Less is more formulation delivers a superior clean without compromise:

Optimized pH cleanses hair and scalp without over-drying

Certified microbiome-friendly formula removes dirt and oil without disrupting the scalp’s natural protective barrier

K18PEPTIDE™ helps reduce protein loss to keep hair feeling healthy and strong

Key benefits

Safe but powerful cleansing: Plant-derived surfactants deliver safe but effective high-power cleansing to breakdown and remove dirt + oil

Designed for damaged hair: pH-optimized formula helps prevent excess swelling of the hair cuticle during washing - which helps maintain color, improve hair health and shine, and reduce frizz

Gentle enough to use every time you cleanse: Gentle on hair AND scalp - pH-optimized formula mimics hair’s natural pH, to reduce cuticle swelling and maintain hair health, and preserve the scalp microbiome

How to use

For Stylist Use

Engineered for higher frequency washing like multi-wash services or clients with less buildup.

  1. Massage into hair, focusing on scalp.
  2. Thoroughly rinse.
  3. Repeat as needed.

For Client Use

  1. Safe to use every time you wash.
  2. Massage into hair, focusing on scalp.
  3. Thoroughly rinse.
  4. Repeat as needed.

Ingredients

Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl 2-Sulfolaurate, Sodium Lauryl Sulfoacetate, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Disodium 2-Sulfolaurate, Caprylyl Glycol, Caprylhydroxamic Acid, Benzoic Acid, Citric Acid, Sodium Hydroxide, Fragrance (Parfum), Limonene.

pairs well with
Servicio de reparación molecular K18 (AL POR MAYOR)Servicio de reparación molecular K18 (AL POR MAYOR)

K18 molecular repair service

Rated 4.9 out of 5
Based on 1361 reviews
PRO mist + mask to reverse hair damage View Servicio de reparación molecular K18 (AL POR MAYOR) product Log In / Register

Description

Un champú con pH optimizado que no daña el color con el K18PEPTIDE™ patentado para limpiar de manera efectiva mientras mantiene la salud del cabello, reduce el encrespamiento y los enredos, preserva el color y realza el brillo.

the PEPTIDE PREP™ difference

Engineered for the most effective clean

PRO to PRO

Learn why PRO stylist Lautrice Thompson trusts pH maintenance shampoo for an optimized cleanse without disturbing hair.

got questions?

Get started here

What is the PEPTIDE PREP™ pH maintenance shampoo?

This is a color-safe, pH-optimized shampoo with the K18PEPTIDE™ to effectively cleanse while maintaining hair health, for hair that feels strong, smooth, and healthy.

What does the pH maintenance shampoo do?

This optimized pH shampoo (4.5-5.5) helps prevent excess swelling of the hair cuticle to help reduce frizz and tangling, preserve color, and maintain health and shine—especially important for damaged hair. An optimized pH also helps preserve the scalp microbiome and is gentle enough to use every time you cleanse.

When do I use the pH maintenance shampoo?

Use this gentle shampoo for higher frequency washing like multiple wash services or clients with less buildup. This pH-balanced formula is gentle enough to use every time you cleanse, and leaves a clean canvas for treatment products.

How does the pH maintenance shampoo work?

The pH maintenance shampoo is powered by plant-derived surfactants to deliver safe but effective high-power cleansing that breaks down and removes dirt + oil. Designed for damaged hair, this pH-optimized formula helps prevent excess swelling of the hair cuticle during washing—which helps maintain color, improve hair health and shine, reduce frizz, and preserve the scalp microbiome. It mimics hair’s natural pH, so this formula is gentle enough to use every time you cleanse.

Why do I need both shampoos?

You need both shampoos to deliver the most effective clean while maintaining your client’s hair + scalp health. Detox shampoo is engineered for less frequent heavy-duty washing, and pH maintenance shampoo is engineered for frequent washing.

microbiome-friendly

Optimized pH preserves a balanced scalp microbiome + protects hair’s natural moisture levels for a smooth hair result.

reviews
average rating 4.6 out of 5
Based on 150 reviews
  • 5 Stars
    124 Reviews
  • 4 Stars
    10 Reviews
  • 3 Stars
    7 Reviews
  • 2 Stars
    2 Reviews
  • 1 Star
    7 Reviews
89% of reviewers would recommend this product to a friend
Customer photos and videos
150 Reviews
Reviewed by Miwa B.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Amazing!

My client’s new favorite shampoo now!

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K18Hair PRO

Thank you for your review!

Reviewed by Milagros S.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Color-care
  • Frizz
  • Dryness
  • Chemical damage
  • Fragile/brittle hair
Hair Type
  • Fine/Thin
My Results
  • Less Frizz
  • Shinier Hair
  • Visible Difference
  • Stronger Hair
  • Bouncy Hair
Rated 5 out of 5
Review posted

Excellent Shampoo.

It's an excellent shampoo that really does what it says it does.

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K18Hair PRO

Thank you Milagros for your review!!

Reviewed by Jonh A H.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Chemical damage
Hair Type
  • Thick/Coarse
My Results
  • Less Frizz
  • Visible Difference
  • Smoother Hair
  • Less Breakage
Rated 5 out of 5
Review posted

Great product

Great product, my hair looks healthier.

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K18Hair PRO

Thank you for your review!

Reviewed by Olga S.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Fragile/brittle hair
Hair Type
  • Fine/Thin
My Results
  • Less Breakage
  • Smoother Hair
Rated 4 out of 5
Review posted

So far so good

I’m very happy with this shampoo. My hair doesn’t get tangled after a wash.

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K18Hair PRO

We appreciate your review Olga!

Reviewed by Brooke C.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Fragile/brittle hair
Hair Type
  • Straight/Wavy
  • Fine/Thin
My Results
  • Shinier Hair
Rated 4 out of 5
Review posted

Committed Customer

I have been a customer from the very beginning and use all 4 products almost exclusively. I was advised to use the Maintenance shampoo regularly, Detox monthly and Serum 4x post hair coloring. I also use the oil but have a little trouble with the distribution of the oil because it has a water like consistency. I have loved the shampoo and serum, even buying it for my adult daughter because of the great results.

Just recently, I have had to reintroduce conditioner after not using conditioner very infrequently due to brittle hair. I also have installed a hard water filter to avoid the poor hair/skin issues. Is there a sweet spot you can recommend for using conditioner in conjunction with the full line?

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K18Hair PRO

Thank you for your review Brooke! K18 will not wash out of your hair. If you apply K18 first and let it set for 4 minutes to fully penetrate the hairs cortex. Once that time has elapsed, you can layer any hair product of your choice, rewet your hair, use conditioner and rinse out, use your heating tools and or style as usual. I've included a few links on how to properly apply K18. Please reach out with additional questions Hello@K18hair.com.
https://www.k18hair.com/blogs/consumer/k18-fundamental-5-help-its-not-working-why
https://www.k18hair.com/blogs/consumer/k18-fundamentals-01-how-much-do-i-use

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