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

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

 28K+ bought in past month
$58.90
$58.90 $89.90
SAVE 34% Sold out

BUNDLE & SAVE

K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health
$58.90
$58.90 $89.90
SAVE 34% Sold out

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.

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.

View full details

soft, strong, bouncy hair for everyone

Repair damage for hair like new* in 4 minutes.

  • "I absolutely love this product!! You have to see it to believe it!"- Christina Marie P.

  • "Amazing the way it feels and the shineprovides to the hair instantly."- Sandra M.

  • "I've been using this mask for aboutfour washes so far. I feel that my hair isgetting healthier."- Olga S.

  • "I really like it, I was able to tint my hairagain and it looks a little more thicker."- Estefania M.

  • "I use this alllll the time. It's truly savedmy hair....And it's so gorgeous andshiny and the thickness is returningnicely."- Emma L.

  • "My hair has been a mess for years...My new hair stylist recommended K18!... My hair looks and feels amazing withlasting results!!" - Arnell M
    •  

      powered by K18 PEPTIDE™

      Biomimetic peptide clicks into hair's keratin structure -the source of core strength-for soft, shiny, bouncyresults that won't wash away.

    Clinically Proven Cleanse

    91%

    said hair looks healthier*

    91%

    said hair feels smoother*

    91%

    said hair doesn't feel weighed down*

    Customer Reviews

    • Rea

      Try it! It’s amazing! I bought the shampoo, conditioner and oil! It actually works wonders! 


      Verified Purchase

    • Gabi

      This is probably the best shampoo and conditioner I have ever used. My hair is naturally curly and it has never looked healthier.

      Verified Purchase

    • Michelle

      My hair dresser suggested this as I have extensions. No fragrance which is great and even better is the frizz control using this shampoo and conditioner. This also conditions my heart. A must buy!

      Verified Purchase

      Get started here.

      Got Questions?

      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?

      We like to keep our formulas minimal, only using the exact amount of ingredients needed to get the peptide where it needs to go. Here the alcohol serves as an agent to optimize the hair environment for the K18 mask to work on a deeper level. Our unique blend of 3 alcohols functions to open the hair cuticle so the K18PEPTIDE™ can penetrate the innermost layer of hair, reaching the broken polypeptide chains (keratin chains).