Accessibility statement Skip to content
free returns. buy with confidence
free shipping on orders $50+*
A bottle of DAMAGE SHIELD protective shampoo by K18, with a white and blue label, indicating the size of 8.5 fl oz.
DAMAGE SHIELD protective shampoo 8.5oz
K18 healthy hair routines- treatment day routine: to repair damage daily routine: to protect against daily damage
new name same formula pH maintenance shampoo formula
cleanse for frequent everyday washing
protect against dullness, frizz + tangling
DAMAGE SHIELD protective conditioner 8.5oz
Mini versus full size product comparison
K18 routine guide
4.8
Rated 4.8 out of 5 stars
519 Reviews

DAMAGE SHIELD pH protective shampoo

Size:
8.5oz
Regular price $56
Regular price $0 Sale price $56
Save Infinity
Color:
8.5oz

Notify me when back in stock

A bottle of DAMAGE SHIELD protective shampoo by K18, with a white and blue label, indicating the size of 8.5 fl oz.

The DAMAGE SHIELD protective shampoo 8.5oz (Size: 8.5oz) isn't available now, but enter your email below and we'll notify you as soon as it's back.

OR
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.

    • How to use
    • More to know
    • Key benefits
    • Ingredients
Press + and − keys to zoom, arrow keys to pan.
A bottle of DAMAGE SHIELD protective shampoo by K18, with a white and blue label, indicating the size of 8.5 fl oz.
DAMAGE SHIELD protective shampoo 8.5oz
K18 healthy hair routines- treatment day routine: to repair damage daily routine: to protect against daily damage
new name same formula pH maintenance shampoo formula
cleanse for frequent everyday washing
protect against dullness, frizz + tangling
DAMAGE SHIELD protective conditioner 8.5oz
Mini versus full size product comparison
K18 routine guide
your protective shampoo questions, answered
Is the formula of the DAMAGE SHIELD pH protective shampoo different from the PEPTIDE PREP™ pH maintenance shampoo?
What makes the DAMAGE SHIELD pH protective shampoo special?
When do I use the DAMAGE SHIELD pH protective shampoo?
Why do I need both shampoos?
clinically proven cleanse
91%
said hair looks healthier*
91%
said hair doesn’t feel weighed down*
how to use
feel what's possible with K18
4.8
Rated 4.8 out of 5 stars
Based on 519 reviews
94%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
519 reviews
  • Jennifer L.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz
    I recommend this product
    Age 45 - 54
    Hair Concern Heat damage, Chemical damage, Frizz, Fragile/brittle hair, Dryness
    Hair Type Fine/Thin
    My Results Less Breakage, Stronger Hair, Smoother Hair, Visible Difference, Less Frizz
    Rated 5 out of 5 stars
    2 days ago
    Awesome Shampoo

    As someone with highly porous, damaged hair, I love this shampoo. It feels great and prevents my hair cuticles from absorbing too much water, leading to less frizz.

    K Profile picture for K18Hair
    K18Hair
    Yesterday

    Thank you so much for your wonderful review, Jennifer! 💕 We're thrilled to hear that the Damage Shield Protective Shampoo is working so well for your highly porous, damaged hair. It's amazing that you're already noticing less frizz and loving how it feels! We're so glad this shampoo is making a difference for you. Thank you for sharing your experience with us! ✨

  • Sonia D.
    Verified Buyer
    Reviewing
    Jumbo DAMAGE SHIELD protective shampoo
    I recommend this product
    Age 45 - 54
    Hair Concern Color-care, Frizz
    Hair Type Curly/Coily
    My Results Defined Curl/Wave Pattern, Cleaner, fresher hair, Odor eliminated, Oil absorbed
    Rated 5 out of 5 stars
    1 week ago
    Shampoo great

    I like the shampoo. It leaves your hair really clean and feels refreshing to the scalp. Soothing.

    K Profile picture for K18Hair
    K18Hair
    1 week ago

    Thank you so much for your review, Sonia! 🤍 We're thrilled to hear that the Jumbo DAMAGE SHIELD protective shampoo is leaving your hair feeling clean and refreshed. We appreciate you being part of the K18 community!

  • Marysa W.
    Verified Buyer
    Reviewing
    mini DAMAGE SHIELD protective shampoo 1.8oz
    I recommend this product
    Age 25 - 34
    Hair Concern Chemical damage, Heat damage, Dryness
    Hair Type Medium Density
    My Results Visible Difference, Smoother Hair, Shinier Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    1 week ago
    Shampoo

    Leaves my hair clean, and my hair doesnt get Greasey as fast anymore

    K Profile picture for K18Hair
    K18Hair
    1 week ago

    Thank you so much for your review, Marysa! We're thrilled to hear that mini DAMAGE SHIELD is leaving your hair feeling clean and fresh. We appreciate you being part of the K18 community! 🤍

  • Mah C.
    Verified Buyer
    Reviewing
    mini DAMAGE SHIELD protective shampoo 1.8oz
    I recommend this product
    Age 25 - 34
    Hair Concern Dryness, Extending time between washes, Split-Ends, Frizz, Fragile/brittle hair
    Hair Type Curly/Coily
    My Results Less Breakage, Defined Curl/Wave Pattern, Smoother Hair, Soft Touchable Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    1 week ago
    I love this shampoo so much

    Look, before I didn’t realize I was so protein sensitive. My ends were rough and dry. Use this weekly and I’m able to separate my hair so easily. My ends coil up and bounce! Thank you k18. Both pictures of my hair have product. Right side with twists are more manageable

    K Profile picture for K18Hair
    K18Hair
    1 week ago

    Thank you so much for your review! We're so happy to hear that mini DAMAGE SHIELD is working beautifully for your hair and that you're loving the results. We truly appreciate you being part of the K18 community! 🤍

  • Jennifer M.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective shampoo 8.5oz
    I recommend this product
    Age 45 - 54
    Hair Concern Chemical damage, Color-care, Split-Ends, Fragile/brittle hair
    Hair Type Medium Density
    My Results Less Breakage, Stronger Hair, Smoother Hair, Soft Touchable Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    2 weeks ago
    Silky Smooth

    Not only does this shampoo smell great, it leaves my hair squaly clean but soft. So glad that I started using it.

    K Profile picture for K18Hair
    K18Hair
    2 weeks ago

    Thank you for your review, Jennifer! We're so happy to hear that Damage Shield is leaving your hair feeling silky smooth and soft. We truly appreciate you sharing your experience and thank you for being part of the K18 community! 🤍

10