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DAMAGE SHIELD pH protective shampoo

Back bar size of our color-safe, protective shampoo to maintain hair health + strength
Rated 4.6 out of 5
Based on 207 reviews

A color-safe, pH-optimized shampoo with the patented K18PEPTIDE™ to effectively cleanse while maintaining hair health and protecting hair from damage. pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent frizz, preserve color, and enhance shine. Scalp microbiome-friendly and gentle enough to use every time you cleanse.


  • gentle daily cleanse
  • microbiome-friendly
  • pH-optimized

Solo profesional

Acceso / REGISTRO

Every purchase supports K18 x Plastic Bank efforts to radically simplify waste.
In 2022 we stopped147 Metric tons of plastic
=
7.3M+ single-use plastic bottles from reaching the ocean

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 your services

  1. Use for higher frequency washing like multiple wash services or clients with less buildup.
  2. Massage into hair, focusing on scalp.
  3. Thoroughly rinse.
  4. Repeat as needed.

PRO TIP: pair with the DAMAGE SHIELD protective conditioner for clients that need added softening + conditioning post K18 treatment mask. Shampoo, towel-dry and apply the PRO leave-in molecular repair hair mask. Wait 4 minutes. Apply DAMAGE SHIELD conditioner and rinse thoroughly.

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.

For best results, follow with DAMAGE SHIELD protective conditioner.

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, Sodium Chloride, Fragrance (Parfum), Limonene.

pairs well with

DAMAGE SHIELD protective conditioner

Rated 4.6 out of 5
Based on 61 reviews
Smoothing conditioner detangles + protects from daily damage View DAMAGE SHIELD protective conditioner 31.5oz (WHOLESALE) product Acceso / REGISTRO

aceite capilar reparador molecular

Rated 4.8 out of 5
Based on 243 reviews
Aceite sin peso que fortalece, repara daños y reduce el encrespamiento View Aceite Capilar Reparador Molecular (AL POR MAYOR) product Acceso / REGISTRO

Descripción

A color-safe, pH-optimized shampoo with the patented K18PEPTIDE™ to effectively cleanse while maintaining hair health and protecting hair from damage. pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent frizz, preserve color, and enhance shine. Scalp microbiome-friendly and gentle enough to use every time you cleanse.


have questions?

Get started here

Is the formula of the DAMAGE SHIELD pH protective shampoo different from the PEPTIDE PREP™ pH maintenance shampoo?

No, the formula of the DAMAGE SHIELD pH protective shampoo is not different from the PEPTIDE PREP™ pH maintenance shampoo. Just the name has changed, the formulation you know and love is the same.

What makes the DAMAGE SHIELD pH protective shampoo special?

The DAMAGE SHIELD pH protective shampoo delivers healthier hair and scalp after just one wash. Its optimized pH helps maintain the hair cuticle, preventing excess water from entering the hair, which can cause damage, dullness, frizz, and tangling. With this shampoo, your client’s color is maintained, hair feels strong, healthy, looks smooth with less frizz, and is easier to style with less tangles. This formula moisturizes hair without weighing it down, and preserves the scalp microbiome for a healthier-feeling scalp and a gentler cleanse. Coupled with the DAMAGE SHIELD protective conditioner, these formulas shield the healthiest hair from daily damage.

When do I use the DAMAGE SHIELD pH protective 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, delivering healthier hair and scalp after just one wash.

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 DAMAGE SHIELD pH protective shampoo (previously pH maintenance shampoo) is engineered for frequent washing.

the DAMAGE SHIELD difference

DAMAGE SHIELD shampoo’s optimized pH reduces excess cuticle swelling during washing—preventing damage that causes dullness, frizz + tangling.

PRO to PRO

See how PRO stylists maintain hair health with DAMAGE SHIELD pH protective shampoo. 

Learn how dimensional color specialist Tabitha Dueñas gently uses DAMAGE SHIELD shampoo in a multi-wash lightening service.
See how natural/curly hair and color specialist Marcel Henriquez gently cleanses curls and coils.

certified microbiome-friendly formula

Engineered with hair’s optimal pH levels in mind, this everyday cleanse keeps your clients’ scalp microbiome balanced for strong, smooth + healthy hair.

want to learn more?

Explore DAMAGE SHIELD tips, tricks, and science deep dives on the blog.

reseñas

average rating 4.6 out of 5
Based on 207 reviews
  • 5 Stars
    174 Reviews
  • 4 Stars
    12 Reviews
  • 3 Stars
    9 Reviews
  • 2 Stars
    3 Reviews
  • 1 Star
    9 Reviews
90% of reviewers would recommend this product to a friend
Customer photos and videos
207 Reviews
Reviewed by Kelly A. P.
Verified Buyer
I recommend this product
Age
65+
Hair Concern
  • Chemical damage
  • Heat damage
  • Split-Ends
Hair Type
  • Medium Density
My Results
  • Less Frizz
  • Less Breakage
  • Smoother Hair
  • Shinier Hair
  • Stronger Hair
Rated 5 out of 5
Review posted

Undecided

It smells nice and lathers well. Haven’t used it enough to really see a difference yet.

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K18Hair PRO

Thank you Kelly for your review!

Reviewed by Cheri S.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Chemical damage
  • Heat damage
  • Color-care
  • Frizz
  • Split-Ends
Hair Type
  • Straight/Wavy
  • Medium Density
My Results
  • Less Frizz
  • Visible Difference
  • Soft Touchable Hair
  • Stronger Hair
  • Shinier Hair
Rated 5 out of 5
Review posted

Sold on K18!

Wow, what a difference this makes and the health of my color treated hair. I color my hair red and normally I can watch as that red color runs down the drain but using this shampoo and the conditioner has really changed that. I’m not having to color my hair as much and the health of my hair is amazing. Soft to the touch less split.

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K18Hair PRO

Thank you Cheri for your review!

Reviewed by Katie S.
Verified Buyer
I recommend this product
Age
35 - 44
Hair Concern
  • Chemical damage
  • Fragile/brittle hair
  • Frizz
  • Color-care
  • Split-Ends
Hair Type
  • Fine/Thin
  • Medium Density
My Results
  • Less Frizz
  • Stronger Hair
  • Visible Difference
  • Less Breakage
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Love it!

I have fine hair that is highlighted, my hair is healthier than ever since I started using K18, this shampoo and conditioner has made my hair feel better and be even more manageable. The shampoo cleans well, a little bit goes a long way, and the conditioner doesn’t weigh my hair down and gives the perfect amount of slip. Love Love Love!!

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K18Hair PRO

Thank you Katie for your review!

Reviewed by Elizabeth D.
Verified Reviewer
I don't recommend this product
Age
35 - 44
Hair Concern
  • Chemical damage
  • Color-care
  • Frizz
  • Fragile/brittle hair
Hair Type
  • Fine/Thin
  • Straight/Wavy
Rated 1 out of 5
Review posted

Disappointed

I really wanted to love this line. It does make sections of my hair look phenomenal. However, as a fine hair girl my hair tangles horribly. The fact that there's not a detangler to pair with this is a no-go for me. I had substantial breakage from the wash, tangle, and brushing cycle. In short: it work-ish, but isn't for my hair type until a compatible detangler is developed.

For those who may have additional concerns about tangling issue... Yes, I brush gently from the ends up. No, other detanglers don't work with this line. They slick over the product coating of K18 and make my fine/thin hair look very greasy and stringy.

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K18Hair PRO

Thank you for your review Elizabeth. Reach out if you have any additional questions to Hello@K18hair.com.

Reviewed by Janet S.
Verified Buyer
I recommend this product
Age
45 - 54
Client Hair Concerns
  • Chemical Damage
  • Frizz
  • Color Care
  • Fragile/Brittle Hair
Client Hair Types
  • Fine/Thin
  • Medium Density
  • Thick/Coarse
  • Straight/Wavy
  • Grey Hair
Client Results
  • Bouncy Hair
  • Visible Difference
  • Stronger hair
  • Shinier Hair
  • Less Breakage
Rated 5 out of 5
Review posted

Love it

I have been using shampoo after each chemical client and I love how it PH ball Andes the hair and makes it feel amazing thr new addition to service is the conditioner too wow love both of these. I use at home too love the results on my hair .

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K18Hair PRO

❤️ Thank you for your trust!

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