DAMAGE SHIELD protective conditioner 31.5oz (WHOLESALE)

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

4.7

Rated 4.7 out of 5 stars

124 Reviews

DAMAGE SHIELD protective conditioner

Smoothing conditioner detangles + protects from daily damage

Professional Only

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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

4.7

Rated 4.7 out of 5 stars

308 Reviews

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

molecular repair hair oil

4.8

Rated 4.8 out of 5 stars

376 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

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

4.7

Rated 4.7 out of 5 stars

Based on 124 reviews

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124 reviews

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Darlene S.
Verified Buyer
Reviewing
DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)
I recommend this product
Age 65+
Hair Concern Chemical damage
Hair Type Curly/Coily
My Results Smoother Hair, Soft Touchable Hair, Visible Difference
Rated 5 out of 5 stars
10 months ago
Love love love
Using damage shields on a regular basis is a game changer
Was this helpful?
K18Hair PRO
10 months ago
Thank you for your review!
Elizabeth M.
Verified Buyer
Reviewing
DAMAGE SHIELD protective conditioner 31.5oz (WHOLESALE)
I recommend this product
Age 55 - 64
Client Hair Concerns Chemical Damage, Heat Damage, Fragile/Brittle Hair, Extending time between washes, Frizz
Client Hair Types Fine/Thin, Medium Density, Curly/Coily
Client Results Less Frizz, Less Breakage, Stronger hair, Shinier Hair, Bouncy Hair
Rated 5 out of 5 stars
10 months ago
Damage Shield Conditioner
OK, I love how soft and bouncy the hair feels . I appreciate how the integrity of the hair improves with each wash!!
Was this helpful?
K18Hair PRO
10 months ago
Thank you for your review!
Felicia W.
Verified Buyer
Reviewing
DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)
I recommend this product
Age 55 - 64
Hair Concern Heat damage, Chemical damage, Dryness, Split-Ends, Fragile/brittle hair
Hair Type Fine/Thin
My Results Less Frizz, Visible Difference, Less Breakage, Smoother Hair, Shinier Hair
Rated 5 out of 5 stars
10 months ago
Love the Conditioner. My hair has really needed a good product for so long and the k.Eighteen is definitely the answer to everything I was looking for.
The conditioner makes my hair so soft and you need very little. It is also repairing my hair with using this K18 conditioner instead of another conditioner.
Was this helpful?
K18Hair PRO
10 months ago
Thank you Felicia for your review!
Tiara N.
Verified Buyer
Reviewing
DAMAGE SHIELD protective conditioner 31.5oz (WHOLESALE)
I recommend this product
Age 35 - 44
Client Hair Concerns Frizz, Chemical Damage, Color Care, Fragile/Brittle Hair
Client Hair Types Medium Density
Client Results Smoother Hair, Shinier Hair, Soft Touchable Hair, Bouncy Hair, Visible Difference
Rated 5 out of 5 stars
11 months ago
Love love love ❤️
My clients and I both love this new conditioner. Make the hair feel so nice and soft.
Was this helpful?
K18Hair PRO
11 months ago
Thank you for entrusting us with your clients hair!
Hannah K.
Verified Buyer
Reviewing
DAMAGE SHIELD protective conditioner 8.5oz (WHOLESALE)
I recommend this product
Age 18 - 24
Hair Concern Chemical damage, Heat damage, Color-care, Fragile/brittle hair, Split-Ends
Hair Type Fine/Thin, Straight/Wavy
My Results Less Breakage, Soft Touchable Hair, Shinier Hair, Visible Difference, Smoother Hair
Rated 5 out of 5 stars
11 months ago
My holy grail
I was so excited when K18 came out with a conditioner, my hair dresser started K18 on me and I carried it on in my normal routine and I will never go back to any other conditioner, monthly subscription for the winnnnnn🙌🏽🙌🏽
My before and after photos are below you can clearly tell which is which 🫶🏼
Was this helpful?
K18Hair PRO
11 months ago
Thank you for your review Hannah!