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DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Illustration of hair cuticle with pH shampoo and hair cuticle without pH shampoo. protect against dullness, frizz + tangling. optimized pH, reduces excess swelling of hair cuticle, prevents damage during washing
cleanse - for frequent everyday washing. 91% said hair feels healthier, smoother and does not feel weighed down. Formulated with K18PEPTIDE
DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Illustration of hair cuticle with pH shampoo and hair cuticle without pH shampoo. protect against dullness, frizz + tangling. optimized pH, reduces excess swelling of hair cuticle, prevents damage during washing
cleanse - for frequent everyday washing. 91% said hair feels healthier, smoother and does not feel weighed down. Formulated with K18PEPTIDE
4.8
Rated 4.8 out of 5 stars
369 Reviews

DAMAGE SHIELD pH protective shampoo

Back bar size of our color-safe, protective shampoo to maintain hair health + strength

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description

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 cleaning

microbiome-friendly

pH-optimized

    • 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, Hydroxycitronellal, Citrus
      Aurantium Dulcis Flower Oil, Citrus Aurantium Peel Oil, Citrus
      Limon Peel Oil, Tetramethyl Acetyloctahydronaphthalenes.

pairs well with
DAMAGE SHIELD protective conditioner
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one use of molecular repair hair oil delivers: clinically proven damage repair, 24-hr frizz control, 104% more shine, 78% reduction in split ends, and 450F heat protection molecular repair hair oil
molecular repair hair oil
View Product
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DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Illustration of hair cuticle with pH shampoo and hair cuticle without pH shampoo. protect against dullness, frizz + tangling. optimized pH, reduces excess swelling of hair cuticle, prevents damage during washing
cleanse - for frequent everyday washing. 91% said hair feels healthier, smoother and does not feel weighed down. Formulated with K18PEPTIDE
DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
DAMAGE SHIELD protective shampoo 31.5oz (WHOLESALE)
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Illustration of hair cuticle with pH shampoo and hair cuticle without pH shampoo. protect against dullness, frizz + tangling. optimized pH, reduces excess swelling of hair cuticle, prevents damage during washing
cleanse - for frequent everyday washing. 91% said hair feels healthier, smoother and does not feel weighed down. Formulated with K18PEPTIDE
your protective shampoo questions, answered

still have questions? visit our help center

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 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 your healthiest hair from daily damage.

When do I use the DAMAGE SHIELD pH protective shampoo?

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 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.

smooth + shield all hair types

pH-optimized formula prevents frizz, dullness + tangles for everyone.

before afer
before
after
"...My hair dresser introduced me to this and I have been using it ever since! The visible difference this made with my hair...was absolutely breathtaking. Will not go back to another shampoo ever!"
- Hannah K.
before afer
before
after
"I really like it, I was able to tint my hair again and it looks a little more thicker."
- Estefania M.
before afer
before
after
"I thought the shampoo really added to the performance of the rest of the products. I didn’t expect to see much of a difference but I really did...I have had so many people comment on how much better my hair looks."
- Michelle F.
before afer
before
after
"...It seems to be working, I do notice less damage and shedding"
- Olympia R.
Powered by K18PEPTIDE™

Biomimetic peptide helps reduce protein loss to help keep hair feeling healthy and strong.

Explore the Science Explore the Science
how to use

Safe to use every time you wash.

1. Massage into hair, focusing on scalp.
2. Thoroughly rinse.
3. Repeat as needed.
For best results, follow with DAMAGE SHIELD protective conditioner.

feel what's possible with K18

See how K18 unlocks our community's expression

4.8
Rated 4.8 out of 5 stars
Based on 369 reviews
95%would recommend these products
Reviews Summary
Customers say this shampoo leaves their hair soft, shiny, and manageable with noticeable results after the first wash. Many appreciate how it cleanses gently without stripping color or irritating sensitive scalps, working well for various hair types from fine to curly. Common feedback highlights reduced frizz, improved manageability, and healthier-looking hair when paired with the conditioner. Users with damaged or color-treated hair report significant improvements in texture and strength. One customer noted the shampoo doesn't rinse out well and leaves hair tangled. Most reviewers find it works effectively for daily use and recommend pairing it with complementary products in the line.
Customers Talked About
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369 reviews
  • Jennifer F.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz (WHOLESALE)
    I recommend this product
    Age 45 - 54
    Hair Concern Extending time between washes, Frizz, Dryness
    Hair Type Thick/Coarse
    My Results Visible Difference, Stronger Hair, Soft Touchable Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    5 months ago
    Best shampoo on the market

    I pair this up with the conditioner and also the detox once a week and consistently rave about these products. You cannot go wrong with K18.

    Was this helpful?
    K18Hair PRO
    5 months ago

    Thank you so much for your incredible review, Jennifer! 💛 We're absolutely thrilled to hear that you consider the DAMAGE SHIELD protective shampoo the best on the market! It sounds like you've created the perfect routine pairing it with the conditioner and adding the detox weekly - that's such a smart approach to maintaining healthy hair! ✨ We're so excited that you consistently rave about these products and that K18 has become your go-to brand. Your amazing 5-star review and trust in our products means the world to us! 🙌

  • Eleni M.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz (WHOLESALE)
    I recommend this product
    Age 45 - 54
    Hair Concern Fragile/brittle hair
    Hair Type Fine/Thin
    My Results Bouncy Hair, Visible Difference, Stronger Hair, Shinier Hair, Soft Touchable Hair
    Rated 5 out of 5 stars
    6 months ago
    Gentle and effective

    I have fine hair and a sensitive scalp, so I tried this with caution. It cleans beautifully without stripping or irritating my scalp. My hair looks revived, feels better, moves better. This is a great product.

    Was this helpful?
    K18Hair PRO
    6 months ago

    Thank you so much, Eleni! We're absolutely thrilled to hear the DAMAGE SHIELD protective shampoo has been such a perfect fit for your fine hair and sensitive scalp! It truly makes our day to know it's cleansing beautifully without any stripping or irritation, and that your hair looks revived and moves better. We appreciate your wonderful 5-star review! ✨💛

  • Martha H.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz (WHOLESALE)
    I recommend this product
    Age 65+
    Hair Concern Fragile/brittle hair, Extending time between washes, Heat damage, Color-care
    Hair Type Grey Hair, Fine/Thin
    My Results Bouncy Hair, Visible Difference, Soft Touchable Hair, Shinier Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    6 months ago
    Long-lasting shiny, clean hair

    I noticed the difference with this product immediately. My hair held the style after blow drying and felt healthier and fuller. The effect lasted for several days. It smells wonderful too. This is my shampoo, now.

    Was this helpful?
    K18Hair PRO
    6 months ago

    We are thrilled to hear you're loving your DAMAGE SHIELD protective shampoo, Martha! It's wonderful that you noticed the difference immediately - the long-lasting style, healthier and fuller feel, plus that amazing scent are exactly what we hoped you'd experience. We're so happy it's become your go-to shampoo! Thank you for your fantastic 5-star review!

  • Marsha B.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz (WHOLESALE)
    I recommend this product
    Age 65+
    Hair Concern Chemical damage, Color-care, Heat damage, Frizz
    Hair Type Straight/Wavy, Grey Hair
    My Results Less Frizz, Visible Difference, Soft Touchable Hair
    Rated 5 out of 5 stars
    6 months ago
    Soft as silk

    My hair is so much silkier after using shampoo and conditioner or masque once a week I use the masque instead of conditioner as directed by my haircolorist.

    Was this helpful?
    K18Hair PRO
    6 months ago

    Thank you so much, Marsha! We're absolutely thrilled to hear your hair is feeling silky smooth after using the DAMAGE SHIELD protective shampoo along with your conditioner and masque routine! It sounds like you have a wonderful haircolorist guiding you - we love hearing when professionals recommend our products and you're seeing such fantastic results. Thank you for your amazing 5-star review!

  • Briseida C. R.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz (WHOLESALE)
    I recommend this product
    Age 25 - 34
    Hair Concern Dryness, Chemical damage, Split-Ends
    Hair Type Medium Density
    My Results Visible Difference, Stronger Hair, Smoother Hair
    Rated 5 out of 5 stars
    6 months ago
    Amazing product!!

    I’ve been trying this along with the conditioner for a couple days and it works great, my hair is so smooth and strong. Definitely recommend it!

    Was this helpful?
    K18Hair PRO
    6 months ago

    Thank you so much for this amazing review, Briseida! We're absolutely thrilled to hear that you're loving DAMAGE SHIELD shampoo along with the conditioner and experiencing such fantastic results after just a couple days! It's wonderful that your hair is feeling so smooth and strong - that's exactly what we hoped to achieve with this protective formula! Your recommendation truly means the world to us, and we're so grateful to have you as part of our K18 community!

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