DAMAGE SHIELD protective conditioner 31.5oz (WHOLESALE)

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 model: PRO TIP: for added detangling post-service, apply DAMAGE SHIELD protective conditioner after K18 pro molecular repair hair mask + waiting 4 minutes.

image of models. shield your healthiest hair against daily damage

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 backbar size conditioner: how to add the DAMAGE SHEILD to the K18 molecular repair service

Rated 4.7 out of 5

Based on 114 reviews

DAMAGE SHIELD protective conditioner

Smoothing conditioner detangles + protects from daily damage

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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

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

For your services
Can be used for added smoothness, softness + detangling after the K18 PRO molecular repair hair mask.

Shampoo, do not condition.
Towel-dry thoroughly.
Apply 1-3 pumps of the PRO molecular repair hair mask.
Wait 4 minutes. Do not rinse out.
Apply a small amount of DAMAGE SHIELD protective conditioner from mid-lengths to ends. Build as needed.
Rinse thoroughly.
You do not need to re-apply the PRO molecular repair hair mask.

For client use

Apply a small amount of DAMAGE SHIELD protective conditioner from mid-lengths to ends and build as needed.
Rinse thoroughly.
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 4.7 out of 5

Based on 273 reviews

Back bar size of our color-safe, protective shampoo to maintain hair health + strength Log In / REGISTER

molecular repair hair oil

Rated 4.8 out of 5

Based on 328 reviews

Weightless oil that strengthens, repairs damage + reduces frizz Log In / REGISTER

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 in the salon, or at home 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. Inspired by nature’s resilience to harsh environments, our biotech-produced polysaccharide delivers 3-day conditioning protection without reapplying.

expert-approved protection

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

PRO to PRO

See how PRO stylists are protecting hair + educating clients on DAMAGE SHIELD.

Learn how dimensional color specialist Tabitha Dueñas detangles with DAMAGE SHIELD in a lightening service.

PRO stylists Tabitha Dueñas + Emily Chen share how they chat about DAMAGE SHIELD with every client.

See how natural/curly hair and color specialist Marcel Henriquez smooths, softens and detangles curly + coily hair in the salon—without weighing hair down.

want to learn more?

Explore DAMAGE SHIELD tips, tricks, and science deep dives on the blog.

PRO Tips to Smooth + Soften Curly + Coily Hair During Services

Our guide to adding conditioning protection to your service routine. Read More

How to Talk To Your Clients About DAMAGE SHIELD protective conditioner

Discover how to educate + retail weightless conditioning protection to every client. Read More

When Should I Use K18 Conditioner vs. Mask?

Get the guide to repairing and protecting every client’s hair. Read More

The Science of Hair Slip

Learn about the slippery ingredients preventing mechanical damage, and how we use biotech to avoid buildup. Read More

certified microbiome-friendly conditioning

Biology-first formula keeps your scalp microbiome in balance with 3-day conditioning damage protection.

feel what's possible with K18

See how K18 unlocks our community's expression

reviews

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average rating 4.7 out of 5

Based on 114 reviews

5 Stars

93 Reviews
4 Stars

12 Reviews
3 Stars

6 Reviews
2 Stars

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1 Star

3 Reviews

92% of reviewers would recommend this product to a friend

Reviewed by Debra N.

Verified Buyer

Reviewing

DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)

I recommend this product

Age

55 - 64

Hair Concern

Heat damage
Fragile/brittle hair
Dryness
Frizz
Split-Ends

Hair Type

Fine/Thin

My Results

Less Frizz
Visible Difference
Soft Touchable Hair
Smoother Hair
Less Breakage

Rated 5 out of 5

Review posted

It works beautifully

This conditioner leaves my hair feeling soft, actually conditioned, and healthy. I love it!

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K18Hair PRO

Thank you Debra! We appreciate your review!

Reviewed by Ally C.

Verified Buyer

Reviewing

DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)

I recommend this product

Age

25 - 34

Client Hair Concerns

Heat Damage
Color Care
Frizz
Chemical Damage

Client Hair Types

Medium Density

Client Results

Bouncy Hair
Stronger hair
Visible Difference
Defined Curl/Wave Pattern

Rated 5 out of 5

Review posted

Best shampoo ever

Love how this makes my hair feel and smell

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K18Hair PRO

Thank you for your review!

Reviewed by Amy L.

Verified Buyer

Reviewing

DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)

I recommend this product

Age

45 - 54

Hair Concern

Chemical damage
Color-care
Frizz
Extending time between washes

Hair Type

Medium Density

My Results

Less Frizz
Soft Touchable Hair
Smoother Hair
Visible Difference

Rated 5 out of 5

Review posted

Liked this WAY more than expected!

What a great conditioner! Does an amazing job nourishing and also reduced frizz.

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K18Hair PRO

Thank you for your review!

Reviewed by Abby B.

Verified Buyer

Reviewing

DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)

I recommend this product

Age

35 - 44

Hair Concern

Chemical damage
Color-care
Fragile/brittle hair
Split-Ends
Extending time between washes

Hair Type

Medium Density

My Results

Stronger Hair
Less Breakage
Soft Touchable Hair
Shinier Hair
Cleaner, fresher hair

Rated 5 out of 5

Review posted

Great product

This is amazing!! My hair was stronger and healthier looking/feeling. It’s great that it protects against heat!!!

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K18Hair PRO

Thank you Abby! Strong and healthy hair is a must!

Reviewed by Claudia V.

Verified Buyer

Reviewing

DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)

I recommend this product

Age

25 - 34

Hair Concern

Chemical damage
Fragile/brittle hair
Dryness
Oily hair/scalp
Extending time between washes

Hair Type

Fine/Thin
Straight/Wavy

My Results

Stronger Hair
Less Breakage
Smoother Hair
Oil absorbed
Cleaner, fresher hair

Rated 5 out of 5

Review posted

Love it

I have long fine hair and always felt like I could never find a shampoo/conditioner than felt right for me. I felt a bit intimidated by the price, versus drugstore products but there’s no doubt in my mind that this line is worth every penny. I restocked this conditioner and I’m about to restock the shampoo as well as give the dry shampoo a try. Like I said, long fine hair so it gets greasy kinda quick. I’ll keep you updated:)

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