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DAMAGE SHIELD Protective Conditioner

871 |
In Stock
Out of Stock
$31.20 $39.00
What it is: A conditioner that protects against damage from UV rays, environmental aggressors, and mechanical styling, while helping soften, detangle,
Size
8.5 oz / 250 mL
8.5 oz / 250 mL
16 oz/473 mL
16 oz/473 mL
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Estimated delivery Oct 16–Oct 21
Free Shipping On all orders
100% Authentic Sephora Verified
Great Value Save more with VIP discounts

K18 Biomimetic Hairscience

What it is: A conditioner that protects against damage from UV rays, environmental aggressors, and mechanical styling, while helping soften, detangle, and enhance shine.

Hair Texture: Straight, Wavy, Curly, and Coily

Hair Type: Fine, Medium, and Thick

Hair Concerns:
- Damage, Split Ends, and Breakage
- Frizz
- UV Protection

Key Benefits:
- Protects hair from daily damage to help maintain hair health
- Detangles, softens, smooths frizz, and enhances shine
- Biomimetic shield protects without film-forming silicones and waxes

Highlighted Ingredients:
- Biotech-Produced Polysaccharide: Protects and shields hair from pollution and environmental aggressors.
- Fortifying Ceramide Blend: Seals damage sites, smoothing and protecting hair from future damage.
- K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.

Ingredient Callouts: It is gluten-free and cruelty-free.

What Else You Need to Know: This conditioner helps prevent damage and maintain hair health while weightlessly nourishing and conditioning. It is pH-optimized to minimize excess cuticle swelling during washing and help prevent frizz, preserve color, and enhance shine. This formula is also made without film-forming silicones and waxes that can build up over time and weigh hair down.

Fragrance Description: This conditioner has a clean citrus scent.

Clinical Results: Results observed in a consumer test of 35 subjects after 1 day of usage of the K18 DAMAGE SHIELD protective conditioner:
- 94% agreed hair did not feel weighed down
- Clinically shown to provide conditioning protection against damage from UV rays, mechanical styling, and environmental aggressors for up to 3 days

Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.

This product is an Allure Best of Beauty award winner.

Verified Purchase
3w ago
Allergic REACTION
Absolutely the worst product. I ended up with several allergic reactions. Itchy scalp and then my body started to feel itchy. Too bad it’s past 30 days and I can’t return it. TERRIBLE PRODUCT.
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SarahAspen
Verified Purchase
1mo ago
I am so disappointed with this product.It made my hair so greasy and frizzy.
Read more
jyo5522556
Verified Purchase
1mo ago
It’s okay. I feel the product is honestly really overhyped. It didn’t do much for my hair, such as improving its texture or shine, and it didn’t produce a good lather. The smell was pleasant, but it didn’t really make my wavy hair stand out or look more defined.
Read more
gisellerh
Verified Purchase
2mos ago
Do not buy.
I bought this with the matching shampoo. I feel like ive had a little more fallout than usual, and it really, really, dried my hair out. The conditioner is really thin, like V05 conditioner thin. The bottles seem cheaply made. Will not be purchasing again.
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AttilaGrace
Verified Purchase
2mos ago
Not the same
K18 re-formulated this conditioner and it’s not the same. Much thinner and therefore less hydrating :/ the packaging has been downgraded too. Feels like a cheaper product all around. Will be trying something new next time!
Read more
chloe123456678
Verified Purchase
3mos ago
Dry!!!!
I don't get the hype or claims for this product. Smell is good, but slip isn't there as they claim. It's not instntly detangling, it requires CAREFUL combing after use, and definitely did not provde passable heat-proof hydration. This will be a return for me
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review photo
Goldieg26
Verified Purchase
3mos ago
Was disappointed in this one /: the formula is really thin and my hair is sooo hard to brush after use. Feels like I didn’t use any conditioner at all. Smells nice though!
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shaely22
Verified Purchase
3mos ago
Great with the shampoo
It’s good and seems to keeps my hair very soft. It says not to use with the pump conditioner but I still do. Smell is ok but not great.
Read more
Bunkerhill
4mos ago
Just get it!
I love this conditioner recommended by my hairstylist and it’s a win 🥇
Read more
melis1209
Verified Purchase
4mos ago
Great conditioner
I like this a lot and have repurchased a few times, I just wish it was a little thicker / the formula feels thinned out. You definitely *have* to comb this through your hair in the shower for it to be effective. I use it with the olaplex fine hair shampoo and K18 heat bounce. My hair feels soft and the combo seems to have halted damage, but as the day progresses the damaged parts of my hair (last few inches) still start getting tangly. I think this product yields better results than the K18 leave-in conditioning mask.
Read more
lilyap

What it is: A conditioner that protects against damage from UV rays, environmental aggressors, and mechanical styling, while helping soften, detangle, and enhance shine.

Hair Texture: Straight, Wavy, Curly, and Coily

Hair Type: Fine, Medium, and Thick

Hair Concerns:
- Damage, Split Ends, and Breakage
- Frizz
- UV Protection

Key Benefits:
- Protects hair from daily damage to help maintain hair health
- Detangles, softens, smooths frizz, and enhances shine
- Biomimetic shield protects without film-forming silicones and waxes

Highlighted Ingredients:
- Biotech-Produced Polysaccharide: Protects and shields hair from pollution and environmental aggressors.
- Fortifying Ceramide Blend: Seals damage sites, smoothing and protecting hair from future damage.
- K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.

Ingredient Callouts: It is gluten-free and cruelty-free.

What Else You Need to Know: This conditioner helps prevent damage and maintain hair health while weightlessly nourishing and conditioning. It is pH-optimized to minimize excess cuticle swelling during washing and help prevent frizz, preserve color, and enhance shine. This formula is also made without film-forming silicones and waxes that can build up over time and weigh hair down.

Fragrance Description: This conditioner has a clean citrus scent.

Clinical Results: Results observed in a consumer test of 35 subjects after 1 day of usage of the K18 DAMAGE SHIELD protective conditioner:
- 94% agreed hair did not feel weighed down
- Clinically shown to provide conditioning protection against damage from UV rays, mechanical styling, and environmental aggressors for up to 3 days

Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.

This product is an Allure Best of Beauty award winner.

-Biotech-Produced Polysaccharide: Protects and shields hair from pollution and environmental aggressors.
-Fortifying Ceramide Blend: Seals damage sites, smoothing and protecting hair from future damage.
-K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.

Water (Aqua) (Eau), Isopropyl Palmitate, Stearyl Alcohol, Propanediol, Isopen1yldiol, Behentrimonium Chloride, Tocopherol, Tocopherylacerate, Sh-Oligopeptide-78,Alteromonas Ferment Extract, Prunus Amygdalus Dulcis (Sweer Almond) Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Phospholipids, Jojoba Esters, Calcium Gwconate, Hydroxypropyl Guar Hydroxypropyl­Trimonium Chloride, Ceramide Np, Phytosteryijisostearyijceiyij Stearyl/Behenyl Dimer Dilinoleate, Polyquaternium-16, Stearalkonium Chloride, Isopropylalcohol, Bij1ylene Glycol, Gluconolactone, Phenoxyerhanol, Sodium Benzoate, Citric Acid, Sodium Hydroxide, Fragrance (Parfum), Hydroxycitronellal.

The list of ingredients is subject to change, please consult the packaging of the product purchased.
Suggested Usage:
-After shampooing with the DAMAGE SHIELD pH Protective Shampoo (sold separately), squeeze out excess water.
-Apply a small amount of conditioner from mid-lengths to ends.
-Rinse thoroughly.
-For best damage repair and prevention results: Use the detox shampoo + K18 molecular repair leave-in mask (sold separately) weekly to repair damage, and use the DAMAGE SHIELD shampoo (sold separately) and conditioner on non-mask wash days, to help prevent additional damage.
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