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DAMAGE SHIELD protective conditioner Image of conditioner: protects hair from damage for up to 3 days*, weightlessly detangles hair, maintains hair health for all hair types, fortifies, softens + smooths, enhancers hairs natural shine, vegan, cruelty-free + plastic net zero Image of conditioner: protects hair from 3 types of damage for up to 3 days*, environmental aggressors, UV rays, mechanical styling 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 models: shield you healthiest hair against daily damage Image of model: weightlessly soften, smooth + detangle hair without film-forming silicones or waxes that can build up over time

DAMAGE SHIELD protective conditioner

Nourishing conditioner shields hair from daily damage
Rated 4.6 out of 5
Based on 135 reviews

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
Full Size - $36.00 8.5 oz Mini Size - $12.00 1.8 oz
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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

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.

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.

pairs well with

DAMAGE SHIELD pH protective shampoo

Rated 4.6 out of 5
Based on 278 reviews
Color-safe protective shampoo maintains hair health + strength

K18 molecular repair hair oil

Rated 4.7 out of 5
Based on 447 reviews
Weightless oil that strengthens, repairs damage + reduces frizz

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.

have questions?

Get started here

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

3-day damage protection, powered by biotech

why hair needs a shield

Damage happens every day from UV rays, mechanical styling, and environmental aggressors—weakening, dulling, and causing frizz on all hair types.

how the shield works

Protect hair BEFORE daily damage occurs. Our biology-first approach to haircare draws inspiration from nature’s resilience to harsh environments. Engineered into 3-day conditioning protection without the need to reapply.

expert-approved protection

Trichologist Angela Onuoha breaks down how common hair aggressors damage hair, and how DAMAGE SHIELD protects hair between K18 mask days.

all hair types need daily damage protection

Discover why PROs are recommending weightless conditioning protection to every client.

reviews
Write a Review
average rating 4.6 out of 5
Based on 135 reviews
  • 5 Stars
    109 Reviews
  • 4 Stars
    13 Reviews
  • 3 Stars
    7 Reviews
  • 2 Stars
    2 Reviews
  • 1 Star
    4 Reviews
90% of reviewers would recommend this product to a friend
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135 Reviews
Reviewed by Jade
DAMAGE SHIELD protective conditioner 8.5oz
Reviewing
DAMAGE SHIELD protective conditioner 8.5oz
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

I think it’s working

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Reviewed by Jade
DAMAGE SHIELD shampoo and conditioner sample
Reviewing
DAMAGE SHIELD shampoo and conditioner sample
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Good i think !!

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Reviewed by Gregoria Z.
Verified Buyer
mini DAMAGE SHIELD protective conditioner 1.8oz
Reviewing
mini DAMAGE SHIELD protective conditioner 1.8oz
I recommend this product
Age
55 - 64
Hair Concern
  • Chemical damage
  • Color-care
  • Fragile/brittle hair
  • Frizz
  • Dryness
Hair Type
  • Thick/Coarse
  • Curly/Coily
  • Grey Hair
My Results
  • Less Frizz
  • Bouncy Hair
  • Visible Difference
  • Cleaner, fresher hair
  • Defined Curl/Wave Pattern
Rated 5 out of 5
Review posted

Conditioner Damage shield

With this little bit I recently purchased I have introduced it to some of my family members who look for me to help them with their hair troubles...and here it is GREAT for all of us...just need a super discount so I can purchase a larger bottle that will go around. I have 6 sister and 3 brothers and I took care of some of there hair this very weekend...but trust me word gets around and everybody is looking to get their hair done. Its awesome to see them happy and so I'm I. Thank you what a GREAT hair experience off to Pennsylvania to my nieces house with my magic K18

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Reviewed by Barbara
DAMAGE SHIELD shampoo and conditioner sample
Reviewing
DAMAGE SHIELD shampoo and conditioner sample
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Love the shampoo so clean so fresh like all new hair and works perfect on extensions too

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Reviewed by Deborah M.
Verified Buyer
DAMAGE SHIELD protective conditioner 8.5oz
Reviewing
DAMAGE SHIELD protective conditioner 8.5oz
I recommend this product
Age
55 - 64
Hair Concern
  • Chemical damage
  • Color-care
  • Dryness
  • Split-Ends
Hair Type
  • Medium Density
  • Straight/Wavy
My Results
  • Less Frizz
  • Stronger Hair
  • Visible Difference
  • Smoother Hair
  • Defined Curl/Wave Pattern
Rated 5 out of 5
Review posted

Soft and healthy hair!

I used detox shampoo and Damage Shield conditionrr and even though I use Pureology normally, this product was fantastic! I have new favorite for my hair! You have to try it.

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