DAMAGE SHIELD pH-Balanced Protective Shampoo | K18Hair

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4.8

Rated 4.8 out of 5 stars

513 Reviews

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DAMAGE SHIELD pH protective shampoo

Color-safe protective shampoo maintains hair health + strength

Size: 8.5ozFull Size - 8.5oz$39.00Jumbo Size - 16oz$59.00Mini Size - 1.8oz$14.00

Regular price $39

Regular price $0 Sale price$39

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Color: 8.5oz

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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

got questions? get started here.

How does the pH-optimized formula help prevent frizz and preserve color?

What are the benefits of the patented K18PEPTIDE™ in this shampoo?

How does this shampoo maintain hair health and protect it from damage?

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.

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.

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.

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

[full-size leave-in molecular repair hair mask](/content/products/leave-in-molecular-repair-hair-mask-50-ml "View Full-Size Leave-In Molecular Repair Hair Mask 50mL"/index.html) 4-minute leave-in treatment to reverse hair damage

Add to bag -

Regular price $75

Regular price $0 Sale price$75

[DAMAGE SHIELD protective conditioner](/content/products/damage-shield-protective-conditioner-8-5oz "View DAMAGE SHIELD protective conditioner 8.5oz"/index.html) Color-safe protective conditioner maintains hair health + strength

Add to bag -

Regular price $39

Regular price $0 Sale price$39

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your protective shampoo questions, answered

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

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

after

"I really like it, I was able to tint my hair again and it looks a little more thicker."

- Estefania M.

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

after

"...It seems to be working, I do notice less damage and shedding"

- Olympia R.

clinically proven cleanse

86%

said hair looks healthier*

86%

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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Rated 5 out of 5 stars

To go along with the leave-in treatment, I started using their shampoo, and it is the perfect pairing! A lot of repairing shampoos tend to weigh my hair down or leave a heavy residue, but this one leaves my hair feeling incredibly clean, light, and soft. It’s gentle enough that it doesn't strip my hair, but it still manages to get rid of all the daily buildup. It creates the perfect, clean canvas for the leave-in mask to really do its job.

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Rated 5 out of 5 stars

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Rated 5 out of 5 stars

totally life changing for my hair!

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Rated 5 out of 5 stars

totally life changing for my hair!

Read More

Rated 5 out of 5 stars

Going almost 50 years hating shampoo and seeing no value because it didn’t serve a purpose to my coarse curly hair because of k18 I’m experiencing a hair renaissance and now look forward to shampoo It’s just different and it has made my hair gorgeous

Read More

Rated 5 out of 5 stars

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Rated 5 out of 5 stars

I purchased the mini size because it’s the first time I’m using this brand, and I wanted to see how well it worked for my hair before committing to a regular sized bottle.

Because my hair is fine and on the shorter side, I’m able to get multiple uses from this product.

And it smells amazing!

I recommend it

Read More

Rated 5 out of 5 stars

Because my hair is fine and on the shorter side, I’m able to get multiple uses from this product.

And it smells amazing!

I recommend it

Read More

Rated 5 out of 5 stars

I purchased the mini just to see how it will work on my hair. I have relaxed, fine, brittle hair. This size is perfect for me. And it’s small enough to be TSA approved!

I also enjoyed the marketing on the inside of the box!

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Rated 5 out of 5 stars

I also enjoyed the marketing on the inside of the box!

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Rated 5 out of 5 stars

This is a great product. I love it and I can feel my hair healthier.

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Rated 5 out of 5 stars

worked rlly well

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Rated 5 out of 5 stars

Before and after pics of me trying to do a curly perm even though I already had curly dyed hair. It completely destroyed my hair. I decided to cut it off and start over. It's growing back so fast and it feels so much healthier. I bought the detox shampoo, hair oil, leave in hair mask and Damage Shield shampoo/conditioner. I know it's expensive but it is worth every penny

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Rated 5 out of 5 stars

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4.8

Rated 4.8 out of 5 stars

Based on 513 reviews

94% would recommend these products

Reviews Summary

Generated by AI from 100 most recent customer reviews

Last updated 10 months ago

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

Reviews 513(tab expanded) Questions 28(tab collapsed)

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513 reviews

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Verified Buyer

Reviewing

DAMAGE SHIELD protective shampoo 8.5oz

I recommend this product

Age 25 - 34

Hair Concern Chemical damage, Heat damage, Fragile/brittle hair, Split-Ends

Hair Type Fine/Thin

My Results Shinier Hair, Smoother Hair, Soft Touchable Hair, Visible Difference, Stronger Hair

Rated 5 out of 5 stars

1 month ago

gentle enough that it doesn't strip my hair

Read MoreRead more about this review

Was this helpful?

Yes, this review from Melanie G. was helpful. 0 people voted yesNo, this review from Melanie G. was not helpful. 0 people voted no

K

K18Hair

1 month ago

Thank you for your wonderful review, Melanie! We're so happy to hear that Damage Shield Shampoo creates the perfect clean canvas for your leave-in treatment. Your support means everything!

Verified Buyer

Reviewing

DAMAGE SHIELD protective shampoo 8.5oz

I recommend this product

Age 18 - 24

Hair Concern Chemical damage, Heat damage, Split-Ends

Hair Type Medium Density

My Results Stronger Hair, Less Breakage, Smoother Hair

Rated 5 out of 5 stars

2 months ago

fixed my damaged hair

totally life changing for my hair!

Read MoreRead more about this review

Was this helpful?

Yes, this review from izzy b. was helpful. 0 people voted yesNo, this review from izzy b. was not helpful. 0 people voted no

K

K18Hair

2 months ago

Thank you so much, Izzy! We're absolutely thrilled to hear the DAMAGE SHIELD protective shampoo has been life changing for your damaged hair! It means the world to us knowing it's made such a difference. We truly appreciate your love and support! ✨

Verified Buyer

Reviewing

mini DAMAGE SHIELD protective shampoo 1.8oz

I recommend this product

Age 45 - 54

Hair Concern Chemical damage, Heat damage, Frizz, Color-care

Hair Type Thick/Coarse, Grey Hair, Curly/Coily

My Results Shinier Hair, Smoother Hair, Visible Difference

Rated 5 out of 5 stars

5 months ago

I now love shampoo

Going almost 50 years hating shampoo and seeing no value because it didn’t serve a purpose to my coarse curly hair because of k18 I’m experiencing a hair renaissance and now look forward to shampoo

It’s just different and it has made my hair gorgeous

Read MoreRead more about this review

Was this helpful?

Yes, this review from Leggette M. was helpful. 2 people voted yesNo, this review from Leggette M. was not helpful. 1 person voted no

K

K18Hair

5 months ago

Thank you so much for your incredible review, Leggette! We're absolutely thrilled to hear that after almost 50 years of not enjoying shampoo, our mini DAMAGE SHIELD protective shampoo has completely transformed your hair experience and sparked a hair renaissance! There's no better compliment than knowing our formula is working so beautifully with your coarse curly hair that you're now actually looking forward to shampoo - that's amazing! We love that you're experiencing gorgeous results and finally finding value in a shampoo that truly serves your hair's needs. ❤️

Reviewing

mini DAMAGE SHIELD protective shampoo 1.8oz

I recommend this product

Age 25 - 34

Hair Concern Chemical damage, Fragile/brittle hair, Split-Ends

Hair Type Fine/Thin

My Results Less Breakage

Rated 5 out of 5 stars

5 months ago

Mini

Because my hair is fine and on the shorter side, I’m able to get multiple uses from this product.

And it smells amazing!

I recommend it

Read MoreRead more about this review

Was this helpful?

Yes, this review from Mrs. L. was helpful. 0 people voted yesNo, this review from Mrs. L. was not helpful. 0 people voted no

K

K18Hair

5 months ago

Thank you so much for your incredible review, Mrs.! We're absolutely thrilled to hear that our mini DAMAGE SHIELD protective shampoo is working so beautifully for your fine hair and that you're getting multiple uses from the travel size - there's no better compliment than knowing our protective formula smells amazing and is delivering such great results that you'd recommend it to others! ❤️

Reviewing

mini DAMAGE SHIELD protective shampoo 1.8oz

I recommend this product

Age 25 - 34

Hair Concern Chemical damage, Fragile/brittle hair, Dryness

Hair Type Fine/Thin

My Results Stronger Hair

Rated 5 out of 5 stars

5 months ago

Mini Shampoo

I also enjoyed the marketing on the inside of the box!

Read MoreRead more about this review

Was this helpful?

Yes, this review from Mrs. L. was helpful. 0 people voted yesNo, this review from Mrs. L. was not helpful. 0 people voted no

K

K18Hair

5 months ago

Thank you so much for your incredible review, Mrs.! We're absolutely thrilled to hear that our mini DAMAGE SHIELD protective shampoo is the perfect size for you to try on your relaxed, fine hair - and we love that you're already thinking ahead for travel with that TSA-approved convenience! There's no better compliment than knowing you enjoyed our special packaging details too! ❤️

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