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Jumbo DAMAGE SHIELD protective shampoo
Regular price $59
Regular price $0 Sale price $59
K18 shampoo bottle on a blue background
K18 hair care product bottles in various sizes on a blue background
Jumbo DAMAGE SHIELD protective shampoo
Blue cleanser product with 'cleanse' text and branding on a blue background
infographic for pH shampoo with illustrations of hair cuticles on a blue background
K18 hair care products on a colorful background with text about healthy hair routines.
Hand holding a K18 product with clear liquid being dispensed against a blue background
K18 hair care routine guide with steps for repair and maintenance.
K18 shampoo bottle on a blue background
K18 hair care product bottles in various sizes on a blue background
Jumbo DAMAGE SHIELD protective shampoo
Blue cleanser product with 'cleanse' text and branding on a blue background
infographic for pH shampoo with illustrations of hair cuticles on a blue background
K18 hair care products on a colorful background with text about healthy hair routines.
Hand holding a K18 product with clear liquid being dispensed against a blue background
K18 hair care routine guide with steps for repair and maintenance.
4.8
Rated 4.8 out of 5 stars
550 Reviews
new

Jumbo DAMAGE SHIELD pH protective shampoo

Color-safe protective shampoo maintains hair health + strength - now in a jumbo size

Size:
16oz
Regular price $59
Regular price $0 Sale price $59
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Color:
16oz

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K18 shampoo bottle on a blue background

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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

    • How to use

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

      For best results, follow with DAMAGE SHIELD protective conditioner.

    • More to know

      * **Safe but powerful cleansing**: Plant-derived surfactants deliver safe but effective high-power cleansing to break down 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.

    • Key benefits

      * **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.

    • 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.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
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Press + and − keys to zoom, arrow keys to pan.
K18 shampoo bottle on a blue background
K18 hair care product bottles in various sizes on a blue background
Jumbo DAMAGE SHIELD protective shampoo
Blue cleanser product with 'cleanse' text and branding on a blue background
infographic for pH shampoo with illustrations of hair cuticles on a blue background
K18 hair care products on a colorful background with text about healthy hair routines.
Hand holding a K18 product with clear liquid being dispensed against a blue background
K18 hair care routine guide with steps for repair and maintenance.
K18 shampoo bottle on a blue background
K18 hair care product bottles in various sizes on a blue background
Jumbo DAMAGE SHIELD protective shampoo
Blue cleanser product with 'cleanse' text and branding on a blue background
infographic for pH shampoo with illustrations of hair cuticles on a blue background
K18 hair care products on a colorful background with text about healthy hair routines.
Hand holding a K18 product with clear liquid being dispensed against a blue background
K18 hair care routine guide with steps for repair and maintenance.
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.
Translation missing: en.before Translation missing: en.after
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.
clinically proven cleanse
91%
said hair looks healthier*
91%
said hair doesn’t feel weighed down*
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.

learn more on our blog
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4.8
Rated 4.8 out of 5 stars
Based on 550 reviews
95%would recommend these products
Reviews Summary
Customers say this shampoo transforms damaged and dry hair into softer, more manageable locks. Many reviews mention noticeable improvements in texture and manageability after just a few washes. Users with curly, straight, and color-treated hair report less frizz and improved shine. The shampoo cleanses thoroughly without stripping moisture. Several reviewers note it helps reduce tangles and makes styling easier. While most praise its effectiveness, some mention the premium price point.
Customers Talked About
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550 reviews
  • Michelle M.
    Verified Buyer
    Reviewing
    Jumbo DAMAGE SHIELD protective shampoo
    I recommend this product
    Age 55 - 64
    Hair Concern Heat damage, Frizz, Fragile/brittle hair, Dryness
    Hair Type Fine/Thin
    My Results Less Frizz, Visible Difference, Stronger Hair, Less Breakage, Smoother Hair
    Rated 5 out of 5 stars
    2 hours ago
    Brought My Hair Back to Life!

    After many years of bleaching, my hair had become so dry & damaged that nothing I tried seemed to help until I found the K18 Damage Shield Shampoo & Conditioner. Now my hair is soft, shiny & is growing! I can't recommend K18 enough!

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    1 hour ago

    Thank you so much for the amazing 5-star review, Michelle! 💕 We're thrilled Damage Shield has brought your hair back to life! ✨

  • Nicola M.
    Verified Buyer
    Reviewing
    Jumbo DAMAGE SHIELD protective shampoo
    I recommend this product
    Age 25 - 34
    Hair Concern Color-care, Dryness, Extending time between washes
    Hair Type Fine/Thin
    My Results Soft Touchable Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    15 hours ago
    Love it!

    I switched to K18 shampoo after being really impressed with the dry shampoo. Never going back to my other brand! It gives me an extra day between washes, smells great, and my hair feels healthier than before.

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    14 hours ago

    Thank you so much for the 5-star love, Nicola! 💕 We're thrilled you switched to Jumbo DAMAGE SHIELD and are loving it! ✨

  • Paula S.
    Verified Buyer
    Reviewing
    Jumbo DAMAGE SHIELD protective shampoo
    I recommend this product
    Age 65+
    Hair Concern Chemical damage, Frizz, Color-care, Heat damage
    Hair Type Medium Density
    My Results Stronger Hair, Less Frizz, Bouncy Hair, Less Breakage, Smoother Hair
    Rated 5 out of 5 stars
    Yesterday
    K18

    I have blonde hair. Colored every 6 weeks at the roots. Since using their products my hair is so healthy and shiny. Love it!!

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    Yesterday

    Thank you so much for the 5-star love, Paula! 💕 We're thrilled that Jumbo DAMAGE SHIELD is keeping your blonde hair healthy and shiny! ✨

  • Shannon P.
    Verified Buyer
    Reviewing
    mini DAMAGE SHIELD protective shampoo 1.8oz
    I recommend this product
    Age 45 - 54
    Hair Concern Chemical damage, Dryness, Extending time between washes, Heat damage
    Hair Type Medium Density
    My Results Soft Touchable Hair, Bouncy Hair, Stronger Hair, Less Breakage
    Rated 5 out of 5 stars
    Yesterday
    Healing my hair

    I love all the K18 products. They make my hair feel clean and healthy. They truly are making my hair healthy again. The Shampoo is light and I find when I use another brand, it feels heavier. The K18 shampoo makes it feel clean again.

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    Yesterday

    Thank you so much for the amazing review, Shannon! 💕 We're thrilled to hear that our K18 products are helping heal your hair and making it feel clean and healthy again. We love that you're noticing the difference with our shampoo - it means the world to us! ✨

  • Julie
    Reviewing
    Jumbo DAMAGE SHIELD protective shampoo
    I recommend this product
    Rated 5 out of 5 stars
    6 days ago
    5 Stars

    Best!!!

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    6 days ago

    Thank you so much for the 5-star love! 💕 We’re thrilled to hear you think our Damage Shield Shampoo is the best! ✨

*Disclaimers

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