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DAMAGE SHIELD protective conditioner 251 mL
Regular price £39
Regular price £0 Sale price £39
DAMAGE SHIELD protective conditioner
DAMAGE SHIELD protective conditioner 251 mL
Image of conditioner: protects hair from 3 types of damage for up to 3 days*, environmental aggressors, UV rays, mechanical styling
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
Image of hair strand graphic: why hair needs a shield, damage happens every day from: uv rays, mechanical styling, environmental aggressors, damage happens at every level
Image of hair strand graphic: damage protection from the inside out, outside: ceramic blend + biotech-produced polysaccharide. Inside: K18PEPTIDETM
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Image of model: weightlessly soften, smooth + detangle hair without film-forming silicones or waxes that can build up over time
DAMAGE SHIELD protective conditioner 8.5oz
Mini versus full size product comparison
K18 routine guide
DAMAGE SHIELD protective conditioner
DAMAGE SHIELD protective conditioner 251 mL
Image of conditioner: protects hair from 3 types of damage for up to 3 days*, environmental aggressors, UV rays, mechanical styling
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
Image of hair strand graphic: why hair needs a shield, damage happens every day from: uv rays, mechanical styling, environmental aggressors, damage happens at every level
Image of hair strand graphic: damage protection from the inside out, outside: ceramic blend + biotech-produced polysaccharide. Inside: K18PEPTIDETM
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Image of model: weightlessly soften, smooth + detangle hair without film-forming silicones or waxes that can build up over time
DAMAGE SHIELD protective conditioner 8.5oz
Mini versus full size product comparison
K18 routine guide
4.8
Rated 4.8 out of 5 stars
312 Reviews

DAMAGE SHIELD protective conditioner

Color-safe protective conditioner maintains hair health + strength

Size:
251 mL
Regular price £39
Regular price £0 Sale price £39
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Color:
251 mL

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DAMAGE SHIELD protective conditioner

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description

A nourishing, protective conditioner that helps shield hair from daily damage to help maintain hair health and improve smoothness and shine. Engineered to weightlessly soften and detangle while the K18PEPTIDE™ helps replenish hair during washing.

protects from damage for up to 3 days from:

UV rays

mechanical styling

environmental aggressors

    • how to use

      1. Apply a small amount of DAMAGE SHIELD protective conditioner from mid-lengths to ends and build as needed.
      2. Rinse thoroughly.
      3. For best results, use after shampooing with DAMAGE SHIELD shampoo.

    • more to know

      Clinically proven to provide conditioning protection against damage from UV rays, mechanical styling, and environmental aggressors for up to 3 days*. Fortifies, softens, and detangles hair.

      * Defends against damage: Conditioning protection against damage from UV rays, environmental aggressors, and daily mechanical styling for up to 3 days.
      * Maintains hair health: Fortifies hair’s exterior lipid barriers to make hair more resilient and resistant to damage. K18PEPTIDE™ replenishes protein lost during washing.
      * Enhances hair’s natural shine: pH-optimized formula minimizes excess cuticle swelling during washing to help keep hair smooth and maximize shine.
      * Softens, smooths, and detangles: Without film-forming silicones or waxes that can build up over time and weigh hair down.

      *Disclaimers

    • key benefits

      * Biotech-Produced Polysaccharide acts as a biomimetic shield to protect hair against pollution and environmental aggressors.
      * Fortifying Ceramide Blend seals damage sites in the hair cuticle—smoothing and protecting hair from further damage.
      * K18PEPTIDE™ replenishes protein lost during washing.

    • ingredients

      Water (Aqua) (Eau), Isopropyl Palmitate, Stearyl Alcohol, Propanediol, Isopentyldiol, Behentrimonium Chloride, Tocopherol, Tocopheryl Acetate, sh-Oligopeptide-78, Alteromonas Ferment Extract, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Phospholipids, Jojoba Esters, Calcium Gluconate, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Ceramide NP, Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate, Polyquaternium-16, Stearalkonium Chloride, Isopropyl Alcohol, Butylene Glycol, Gluconolactone, Phenoxyethanol, Sodium Benzoate, Citric Acid, Sodium Hydroxide, Fragrance (Parfum), Hydroxycitronellal, Limonene, Citrus Aurantium Dulcis Flower Oil, Citrus Aurantium Peel Oil, Citrus Limon Peel Oil, Coumarin, Tetramethyl Acetyloctahydronaphthalenes.

pairs well with
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 pH protective shampoo
full-size leave-in molecular repair hair mask
Press + and − keys to zoom, arrow keys to pan.
DAMAGE SHIELD protective conditioner
DAMAGE SHIELD protective conditioner 251 mL
Image of conditioner: protects hair from 3 types of damage for up to 3 days*, environmental aggressors, UV rays, mechanical styling
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
Image of hair strand graphic: why hair needs a shield, damage happens every day from: uv rays, mechanical styling, environmental aggressors, damage happens at every level
Image of hair strand graphic: damage protection from the inside out, outside: ceramic blend + biotech-produced polysaccharide. Inside: K18PEPTIDETM
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Image of model: weightlessly soften, smooth + detangle hair without film-forming silicones or waxes that can build up over time
DAMAGE SHIELD protective conditioner 8.5oz
Mini versus full size product comparison
K18 routine guide
DAMAGE SHIELD protective conditioner
DAMAGE SHIELD protective conditioner 251 mL
Image of conditioner: protects hair from 3 types of damage for up to 3 days*, environmental aggressors, UV rays, mechanical styling
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
Image of hair strand graphic: why hair needs a shield, damage happens every day from: uv rays, mechanical styling, environmental aggressors, damage happens at every level
Image of hair strand graphic: damage protection from the inside out, outside: ceramic blend + biotech-produced polysaccharide. Inside: K18PEPTIDETM
Image of K18 routine: K18 healthy hair routines, when you need to repair damage (detox shampoo + leave-in mask, when you need to protect against daily damage (pH shampoo + conditioner)
Image of model: weightlessly soften, smooth + detangle hair without film-forming silicones or waxes that can build up over time
DAMAGE SHIELD protective conditioner 8.5oz
Mini versus full size product comparison
K18 routine guide
your protective conditioner questions, answered

still have questions? visit our help center

can i use the conditioner instead of the mask?

The mask and conditioner serve two different purposes. The K18 mask reverses damage in 4 minutes, while the K18 conditioner protects hair from daily damage for up to 3 days*. We recommend using the K18 mask first, waiting 4 minutes, then using conditioner for additional softening and detangling benefits between K18 mask days.
*Disclaimers

will the K18 conditioner cause buildup on hair?

No, the K18 conditioner will not cause buildup on hair. The highly concentrated, lightweight gel formula means a little goes a long way. Use less than you typically would with a traditional conditioner, and build as needed.

will the K18 conditioner weigh hair down?

No, the K18 conditioner will not weigh hair down. This highly concentrated, lightweight gel formula softens, smooths, and detangles without film-forming silicones or waxes that can build up over time.

does the K18 conditioner need to be reapplied for continued UV protection?

No, you do not need to reapply the K18 conditioner for continued UV protection. This product is clinically proven to protect hair against damage from UV rays for up to 3 days*.
*Disclaimers

does the K18 conditioner have SPF?

No, the K18 conditioner does not have SPF. The biotech-produced polysaccharide and fortifying ceramide blend help minimize the drying and damaging effects of UV rays on the hair's cuticle. This prevents hair from becoming rough, brittle, weak, and prone to breakage from UV damage for up to 3 days*.
*Disclaimers

clinically proven protection
3
days of conditioning protection against damage from UV rays, mechanical styling + environmental aggressors*
94%
agreed hair didn’t feel weighed down*
91%
agreed hair felt softer*
Powered by biotech-produced polysaccharide

Acts as a biomimetic shield to protect hair BEFORE daily damage occurs—preventing damage, dullness + frizz.

Explore the Science Explore the Science
how to use damage shield conditioner

1. Apply a small amount of DAMAGE SHIELD protective conditioner from mid-lengths to ends and build as needed.
2. Thoroughly rinse.

For best results, use after shampooing with DAMAGE SHIELD shampoo.

learn more on our blog
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feel what's possible with K18

See how K18 unlocks our community's expression

4.8
Rated 4.8 out of 5 stars
Based on 312 reviews
96%would recommend these products
Reviews Summary
Customers say this conditioner makes their hair feel incredibly soft, smooth, and manageable without weighing it down. Many report noticeable improvements after just one use, with hair becoming less frizzy, more detangled, and easier to comb through. Users with fine hair appreciate that it doesn't leave hair feeling heavy or greasy, while those with thick, curly, or damaged hair find it provides excellent moisture and slip. Many mention the pleasant scent and how it works well with the matching shampoo. Frequent comments address how it helps with breakage, split ends, and overall hair strength, with several noting their hair appears thicker and shinier over time.
Customers Talked About
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312 reviews
  • Christina M.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective conditioner 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
    2 hours ago
    Love this

    Best conditioner ever used to help with my dry damaged hair.

    Was this helpful?
    KU Profile picture for K18Hair UK
    K18Hair UK
    58 minutes ago

    Thank you so much for your amazing review, Christina! 💙 We're thrilled to hear that DAMAGE SHIELD is working so well for your dry, damaged hair. We appreciate your support!

  • Sonia D.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective conditioner 251 mL
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    Excellent.

    Love it

    Was this helpful?
    KU Profile picture for K18Hair UK
    K18Hair UK
    Yesterday

    Thank you so much for your amazing review, Sonia! 💙 We're thrilled you're loving DAMAGE SHIELD! ✨

  • Belinda L.
    Verified Buyer
    Reviewing
    Jumbo DAMAGE SHIELD protective conditioner
    I recommend this product
    Age 55 - 64
    Hair Concern Frizz, Color-care, Heat damage
    Hair Type Medium Density
    My Results Less Frizz, Stronger Hair, Smoother Hair, Soft Touchable Hair
    Rated 5 out of 5 stars
    Yesterday
    Excellent results

    I’ve tried almost all the K19 products now and this conditioner along with the others have made my hair feel better than I can ever remember. Over the years I’ve tried many products but these are by far the best. I’m a lifelong customer now.

    Was this helpful?
    KU Profile picture for K18Hair UK
    K18Hair UK
    Yesterday

    Thank you so much for your amazing review, Belinda! 💙 We're thrilled that Jumbo DAMAGE SHIELD and our K18 line have made such a difference for your hair. Welcome to the family! ✨

  • Mary H.
    Verified Buyer
    Reviewing
    DAMAGE SHIELD protective conditioner 251 mL
    I recommend this product
    Age 65+
    Hair Concern Chemical damage, Dryness, Color-care
    Hair Type Medium Density
    My Results Smoother Hair, Shinier Hair
    Rated 5 out of 5 stars
    3 days ago
    Damage Shield conditioner

    just a small amount, and it leaves my hair soft, silky and manageable

    Was this helpful?
    KU Profile picture for K18Hair UK
    K18Hair UK
    3 days ago

    Thank you so much for your wonderful review, Mary! 💙 We're thrilled to hear that Damage Shield is leaving your hair so soft, silky and manageable! ✨

  • Melissa P.
    Verified Buyer
    Reviewing
    Jumbo DAMAGE SHIELD protective conditioner
    I recommend this product
    Age 35 - 44
    Hair Concern Chemical damage, Frizz, Fragile/brittle hair, Dryness
    Hair Type Fine/Thin
    My Results Visible Difference, Less Breakage, Smoother Hair, Bouncy Hair, Stronger Hair
    Rated 5 out of 5 stars
    5 days ago
    NICEEEE

    I am having a midlife crisis at 43 and decided that I must bleach my brown curls pink. K18 is saving my hair!

    Was this helpful?
    KU Profile picture for K18Hair UK
    K18Hair UK
    5 days ago

    Thank you so much for the love, Melissa! 💕 We're thrilled that Jumbo DAMAGE SHIELD is keeping your pink curls looking gorgeous! Here's to your fabulous new look! ✨

*Disclaimers

10