Jumbo DAMAGE SHIELD protective shampoo

£59

4.9

Rated 4.9 out of 5 stars

327 Reviews

new

Jumbo DAMAGE SHIELD pH protective shampoo

Name: Jumbo DAMAGE SHIELD protective shampoo
Brand: K18Hair
SKU: K18-40126
Price: 59.00 GBP
Availability: InStock

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

Full Size - 251 mL£39.00 Jumbo Size - 16 oz£59.00 Mini Size - 53 mL£14.00

£59

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description

A colour-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 colour, 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 colour, 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.

pairs well with

Mini, Full, and Jumbo size leave in molecular repair masks lined up next to each other on a pink background.

jumbo leave-in molecular repair hair mask

Jumbo DAMAGE SHIELD protective conditioner

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

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

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

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.

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4.9

Rated 4.9 out of 5 stars

Based on 327 reviews

98%would recommend these products

Reviews Summary

Customers say this shampoo leaves hair feeling soft, clean, and manageable without weighing it down. Many users with damaged, bleached, or color-treated hair report noticeable improvements in strength and reduced breakage after regular use. Customers with curly hair appreciate how it reduces frizz and enhances curl definition. The pleasant fragrance is frequently mentioned, with many noting that a little product goes a long way. Users consistently praise how it doesn't strip color from treated hair while providing thorough cleansing. Most customers report seeing visible improvements within the first few weeks of use, with hair appearing shinier and healthier overall.

Customers Talked About

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327 reviews

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Angela H.
Verified Buyer
Reviewing
Jumbo DAMAGE SHIELD protective shampoo
I recommend this product
Rated 5 out of 5 stars
1 hour ago
Best shampoo ever
Leaves hair feeling soft and bouncy. Very lightweight and clean feel. Really great find
Was this helpful?
KU
K18Hair UK
4 minutes ago
Thank you so much, Angela! 💖 We're thrilled to hear you love our Jumbo Damage Shield Shampoo and that it's leaving your hair feeling so soft and bouncy! ✨
Jennifer B.
Verified Buyer
Reviewing
Jumbo DAMAGE SHIELD protective shampoo
I recommend this product
Age 55 - 64
Hair Concern Color-care, Chemical damage, Extending time between washes, Fragile/brittle hair, Split-Ends
Hair Type Fine/Thin
My Results Visible Difference, Stronger Hair, Smoother Hair, Cleaner, fresher hair, Less Breakage
Rated 5 out of 5 stars
11 hours ago
Amazing
Best shampoo I’ve ever used!
Was this helpful?
KU
K18Hair UK
10 hours ago
Thank you so much for your amazing 5-star review, Jennifer! We're thrilled to hear that Jumbo DAMAGE SHIELD is your favorite shampoo. Your support means everything to us! 💙
Hazel C.
Verified Buyer
Reviewing
DAMAGE SHIELD protective shampoo 251 mL
I recommend this product
Rated 5 out of 5 stars
20 hours ago
Mrs
An absolutely marvellous product
Was this helpful?
KU
K18Hair UK
18 hours ago
Thank you so much, Hazel! 💖 We're thrilled to hear you think DAMAGE SHIELD is marvellous! Your support means the world to us. ✨
Gareth S.
Verified Buyer
Reviewing
Jumbo DAMAGE SHIELD protective shampoo
I recommend this product
Age 45 - 54
Hair Concern Frizz, Chemical damage, Dryness, Oily hair/scalp, Color-care
Hair Type Thick/Coarse
My Results Cleaner, fresher hair
Rated 5 out of 5 stars
4 days ago
Excellent Shampoo
This shampoo smells clean, lathers well, and my hair and scalp feel squeaky clean after using it. It feels as if my hair has no residue contrasting to traditional shampoos. I am impressed with the shampoo. I was skeptical in purchasing but was pleasantly surprised at the size of the bottle and how clean my hair feels afterwards with zero residue!
Was this helpful?
KU
K18Hair UK
4 days ago
Thank you so much for your wonderful 5-star review, Gareth! 💙 We're thrilled you're loving Jumbo DAMAGE SHIELD and that your hair feels so clean and residue-free. We appreciate your support!
Christina M.
Verified Buyer
Reviewing
DAMAGE SHIELD protective shampoo 251 mL
I recommend this product
Age 55 - 64
Hair Concern Heat damage, Color-care, Split-Ends, Extending time between washes
Hair Type Fine/Thin
My Results Bouncy Hair, Less Frizz, Stronger Hair, Less Breakage
Rated 5 out of 5 stars
1 week ago
Love this shampoo
Has helped give my hair more body and feel healthier.
Was this helpful?
KU
K18Hair UK
1 week ago
Thank you so much for your amazing review, Christina! 💙 We're thrilled to hear that DAMAGE SHIELD is giving your hair more body and helping it feel healthier. We appreciate your support!

*Disclaimers