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K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health, 8.5 Fl Oz

4.5 out of 5 stars 553 ratings
K18
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$36.00 $4.24 per Ounce
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Purchase options and add-ons

Brand K18
Item Form Cream
Hair Type Normal
Scent Fresh
Age Range (Description) Adult

Additional Details

Small Business
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Small Business
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Description

This color-safe, pH-optimized shampoo effectively cleanses while maintaining hair health. It reduces frizz and tangles, preserves color, and enhances shine. Our less-is-more formula delivers a superior clean without compromise

Benefits

Our K18PEPTIDE™ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all

Suggested use

Massage into hair, focusing on the scalp. Thoroughly rinse & repeat as needed. This conditioner is safe to use every time you wash

Buy it with

K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health, 8.5 Fl Oz
This item: K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health, 8.5 Fl Oz
$36.00 ($4.24/Ounce)
Get it as soon as Saturday, May 3
In Stock
Sold by K18 Hair and ships from Amazon Fulfillment.
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K18 PEPTIDE PREP™ Color-Safe Detox Clarifying Shampoo, Non-Stripping, pH-Optimized Cleanse, Removes Product Buildup, Dirt, Oi
$38.00 ($4.47/Fl Oz)
In Stock
Sold by K18 Hair and ships from Amazon Fulfillment.
+
K18 Damage Shield Protective Conditioner, Protects Hair from Daily Damage, Improves Strength & Shine, 8.5 Fl Oz
$36.00 ($4.24/Fl Oz)
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  2. Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Safer chemicals
    Made with chemicals safer for human health and the environment.
    As certified by
    Cradle to Cradle Certified

    Cradle to Cradle Certified

    Cradle to Cradle Certified is the world's most comprehensive standard for safe, circular and responsible products. Certified products meet science-based requirements that have positive benefits including health and wellbeing, material reuse, emissions reductions, water quality, and fair and safe labor practices. The Cradle to Cradle Certified Product Standard is set by the Cradle to Cradle Products Innovation Institute, a global non-profit dedicated to powering innovation for a prosperous economy.
    Certification Level
    SILVER ACHIEVEMENT LEVEL

    Climate Pledge Friendly

    Discover more products with sustainability features.Learn more
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From the brand

Previous page
  2. k18 brand story
  3. why k18?
  4. K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, C...
    K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, C...
    K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, C...
    K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, C...

    Shop damage repair mask

    Visit the Store

  5. K18 AirWash Dry Shampoo, Non-Aerosol, Balances Scalp & Controls Excess Oil Production, 4 Fl Oz
    K18 AirWash Dry Shampoo, Non-Aerosol, Balances Scalp & Controls Excess Oil Production, 4 Fl Oz
    K18 AirWash Dry Shampoo, Non-Aerosol, Balances Scalp & Controls Excess Oil Production, 4 Fl Oz
    K18 AirWash Dry Shampoo, Non-Aerosol, Balances Scalp & Controls Excess Oil Production, 4 Fl Oz

    Shop weightless dry shampoo

    Visit the Store

  6. shampoo & conditioner
    K18 Damage Shield Protective Conditioner, Protects Hair from Daily Damage, Improves Strength & Sh...
    K18 PEPTIDE PREP Color-Safe Detox Clarifying Shampoo, Non-Stripping, pH-Optimized Cleanse, Remov...
    K18 PEPTIDE PREP Color-Safe Detox Clarifying Shampoo, Non-Stripping, pH-Optimized Cleanse, Remov...

    Shop shampoo + conditioner

    Visit the Store

  7. K18 Molecular Repair Hair Oil, Weightless Oil for Stronger, Healthier Hair, Suitable For All Hair...
    K18 Molecular Repair Hair Oil, Weightless Oil for Stronger, Healthier Hair, Suitable For All Hair...
    K18 Molecular Repair Hair Oil, Weightless Oil for Stronger, Healthier Hair, Suitable For All Hair...
    K18 Molecular Repair Hair Oil, Weightless Oil for Stronger, Healthier Hair, Suitable For All Hair...

    Shop frizz-fighting hair oil

    Visit the Store

  8. simone biles
  9. k18 hair
  10. k18 hair
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Product Description

Damage Shield
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

K18 Damage Shield Shampoo

Merchant Video
damage shield
K18

  • 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.

  • 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.

  • This pH-balanced formula is gentle enough to use every time you cleanse, delivering healthier hair and scalp after just one wash.

  • 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 is engineered for frequent washing.

Shop the K18 Collection

Damage Shield Shampoo

Damage Shield Conditioner

Detox Shampoo

Molecular Repair Mask

AirWash

Molecular Repair Oil

Customer Reviews
4.5 out of 5 stars 553
4.5 out of 5 stars 613
4.6 out of 5 stars 1,451
4.3 out of 5 stars 22,769
4.2 out of 5 stars 244
4.4 out of 5 stars 1,341
Price
$36.00 $36.00 $38.00 $75.00 $48.00 $65.00
Molecular Repair
✘ ✘ ✘ ✔ ✘ ✔
Maintenance Routine
✔ ✔ ✘ ✘ ✔ ✘
Treatment Routine
✘ ✘ ✔ ✔ ✘ ✔
Used By Professionals
✔ ✔ ✔ ✔ ✔ ✔
At Home Use
✔ ✔ ✔ ✔ ✔ ✔

Product details

  • Product Dimensions ‏ : ‎ 2.6 x 2.6 x 5.6 inches; 8.82 ounces
  • UPC ‏ : ‎ 858511000749
  • Manufacturer ‏ : ‎ K18 Hair
  • ASIN ‏ : ‎ B0CQ5956VN
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.5 out of 5 stars 553 ratings

Customer reviews

4.5 out of 5 stars
553 global ratings

Review this product

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Customers say

Customers find this shampoo effective for damaged hair, with one noting it helped their hair fully recover. The product receives positive feedback for its silky texture, added shine, and pleasant smell. While some customers say it makes their hair feel great, others report it leaves their hair very dry. The build strength and value for money aspects receive mixed reviews, with some finding it strong and worth the price while others disagree.

AI-generated from the text of customer reviews

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32 customers mention "Hair health"30 positive2 negative

Customers report that the shampoo keeps their hair healthy and helps with damaged strands, with one customer noting it works like a clarifying shampoo.

"...It’s been especially helpful for growing my hair, which is prone to breakage...." Read more

"...stylist recommended this and the conditioner to me, and my hair is seeming much healthier now!" Read more

"Hair came back to life!" Read more

"My hair was dry from all the bleaching and color it fixed my hair and provided the moisture i needed and my hair is growing" Read more

13 customers mention "Texture"13 positive0 negative

Customers like the shampoo's texture, with multiple reviews noting that their hair feels silky after use.

"...well without stripping moisture, and my hair feels silky and smooth after each wash. I also love the scent and the added shine it gives...." Read more

"...The first time I used it my hair felt thicker and stronger. I actually could not believe it. I will no be using any shampoo other than k 18...." Read more

"...Today all I used was heat protection spray and my hair is smooth. I will definitely repurchase in the future." Read more

"Keep hair soft" Read more

11 customers mention "Shine"9 positive2 negative

Customers like how the shampoo adds shine to their hair, with one customer noting it maintained their highlights for years.

"...I also love the scent and the added shine it gives. Convenient to order on Amazon, and definitely worth the price for the results!" Read more

"Shine and softness!" Read more

"...It is a little pricey, but it doesn't take much and your hair will look so much better." Read more

"I am loving the shampoo and conditioner. It has tamed the frizz beautifully. Today all I used was heat protection spray and my hair is smooth...." Read more

9 customers mention "Shampoo quality"9 positive0 negative

Customers find this shampoo excellent, with one mentioning it's the best for hair repair and another noting its effectiveness for dandruff.

"Where has this line been all these years. This is the absolute best shampoo. I highly recommend." Read more

"excellent shampoo! would buy again" Read more

"I got this for my granddaughter. It’s her favorite type of shampoo and conditioner. She loves the way it makes her hair look." Read more

"the best shampoo for hair repair" Read more

9 customers mention "Smell"9 positive0 negative

Customers like the shampoo's pleasant scent.

"...I also love the scent and the added shine it gives. Convenient to order on Amazon, and definitely worth the price for the results!" Read more

"smells good and feels good! hoping for great results" Read more

"...Definitely recommend and it smells great." Read more

"...Also, there is very little perfume or fragrance added, so doesn’t smell as strongly as other shampoos, which is a huge plus, since strong..." Read more

22 customers mention "Value for money"14 positive8 negative

Customers have mixed opinions about the shampoo's value for money, with some finding it amazing and worth the price, while others feel it's too expensive.

"...Convenient to order on Amazon, and definitely worth the price for the results!" Read more

"...Expensive, but soo worth it. Only shampoo I'll buy now." Read more

"...I bought the conditioner too. It is a little pricey, but it doesn't take much and your hair will look so much better." Read more

"Excellent product. Calms the frizzies. Provides body to hair. Pricey, but not much needed for shampoos." Read more

13 customers mention "Moisture level"5 positive8 negative

Customers have mixed experiences with the shampoo's moisture level, with some reporting it doesn't dry out their hair, while others find it makes their hair dry.

"...My hair felt dry, looked dull, and completely lacked the softness and shine I was expecting...." Read more

"...dry from all the bleaching and color it fixed my hair and provided the moisture i needed and my hair is growing" Read more

"...I am not so impressed with the shampoo. My hair is soft but still too dry...." Read more

"It makes my scalp dry and itchy 👎🏼..." Read more

9 customers mention "Build strength"5 positive4 negative

Customers have mixed experiences with the shampoo's build strength, with some finding it stronger while others report issues with breakage.

"...The first time I used it my hair felt thicker and stronger. I actually could not believe it. I will no be using any shampoo other than k 18...." Read more

"Definitely not worth the money. My hair seems to have more breakage...." Read more

"...hair and ever since I started using this product I have more growth more strength and this product really is good" Read more

"...hair is not severely damaged it will dry it out super bad and make it brittle i had to get a deep conditioning at the salon after using it for just..." Read more

Does amazing with my hair
5 out of 5 stars
Does amazing with my hair
This is probably the best shampoo and conditioner I have ever used. My hair is naturally curly and it has never looked healthier.
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Top reviews from the United States

  • Adalynne H.
    5.0 out of 5 stars Worth it!
    Reviewed in the United States on February 24, 2025
    Verified Purchase
    I’ve used K18 Shampoo several times, and it always leaves my hair feeling soft and healthy. It’s been especially helpful for growing my hair, which is prone to breakage. The formula cleans well without stripping moisture, and my hair feels silky and smooth after each wash. I also love the scent and the added shine it gives. Convenient to order on Amazon, and definitely worth the price for the results!
    6 people found this helpful
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  • Amazon Customer
    5.0 out of 5 stars Transformative hair product
    Reviewed in the United States on April 23, 2025
    Verified Purchase
    Shine and softness!
    Helpful
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  • Felicia C
    5.0 out of 5 stars So happy that my stylist recommended this
    Reviewed in the United States on April 5, 2025
    Verified Purchase
    I have thin dry hair thats greasy at the roots, my stylist recommended this and the conditioner to me, and my hair is seeming much healthier now!
    One person found this helpful
    Helpful
     Report
  • chloe
    5.0 out of 5 stars Worth the price
    Reviewed in the United States on April 23, 2025
    Verified Purchase
    LOVE that this shampoo doesn't have protein, as protein makes my hair so dry and frizzy. Expensive, but soo worth it. Only shampoo I'll buy now.
    Helpful
     Report
  • Valerie Roweltt
    5.0 out of 5 stars best shampoo I have used in 70 years
    Reviewed in the United States on February 26, 2025
    Verified Purchase
    I ordered this after covid/flu. My hair was a mess, dry, fly away and dry. The first time I used it my hair felt thicker and stronger. I actually could not believe it. I will no be using any shampoo other than k 18. It is the best I have ever used. I bought the conditioner too. It is a little pricey, but it doesn't take much and your hair will look so much better.
    7 people found this helpful
    Helpful
     Report
  • Danielle Wingfield
    4.0 out of 5 stars A little bit
    Reviewed in the United States on April 18, 2025
    Verified Purchase
    A little bit goes a long way.The amount you generally use on your hair cut it in half or more .
    Helpful
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  • Roxi
    1.0 out of 5 stars Left My Hair Dull and Dry After One Use
    Reviewed in the United States on April 4, 2025
    Verified Purchase
    I was really excited to try the K18 shampoo and conditioner, but after just one use, I was seriously disappointed. My hair felt dry, looked dull, and completely lacked the softness and shine I was expecting. For such a high-end product, I thought it would deliver noticeable results—but instead, it left my hair worse than before. Definitely not worth the hype, at least based on my experience.
    One person found this helpful
    Helpful
     Report
  • Amazon Customer
    5.0 out of 5 stars Excellent Frizz control
    Reviewed in the United States on April 8, 2025
    Verified Purchase
    I am loving the shampoo and conditioner. It has tamed the frizz beautifully. Today all I used was heat protection spray and my hair is smooth. I will definitely repurchase in the future.
    One person found this helpful
    Helpful
     Report

Top reviews from other countries

Translate all reviews to English
  • Maria Alicia Nieto Llovet
    5.0 out of 5 stars Muy bien
    Reviewed in Mexico on November 6, 2024
    Verified Purchase
    Cumple
    Report
  • Claudia144
    5.0 out of 5 stars Super!
    Reviewed in Germany on March 3, 2025
    Verified Purchase
    Tolles Produkt, hält was es verspricht!
    Report
  • B. Doyle
    5.0 out of 5 stars Nice product
    Reviewed in Canada on July 28, 2024
    Verified Purchase
    I like this product.
    Report
  • Hend
    1.0 out of 5 stars Not for me
    Reviewed in Saudi Arabia on June 21, 2024
    Verified Purchase
    The product didn’t work on my hair.
    Report
  • Bryan
    4.0 out of 5 stars Great product
    Reviewed in Australia on September 3, 2024
    Verified Purchase
    Helped improve my scalp and reduce dandruff. Only need a small amount for short hair so it lasts surprisingly long.

    Not the biggest fan of the bottle design as the lid can fill with water but that’s my only criticism.
    Report