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K18

K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health

  • Based on 951 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Apr 29
Order within 21 hours and 36 minutes
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Size: 8.5 Ounce (Pack of 1)


Features

  • Color-safe but powerful cleansing: Plant-derived surfactants deliver safe but effective high-power cleansing to break down and remove dirt + oil
  • Designed for damaged hair: pH-optimized formula helps prevent excess swelling of the hair cuticle during washing, which helps maintain color, improve hair health and shine, and reduce frizz
  • Gentle enough to use every time you cleanse: Gentle on hair AND scalp. pH-optimized formula mimics hairs natural pH, to reduce cuticle swelling and maintain hair health, and preserve the scalp microbiome
  • Certified microbiome-friendly formula: Removes dirt and oil without disrupting the scalps natural protective barrier
  • Formulated with K18PEPTIDE: Helps reduce protein loss to keep hair feeling healthy and strong

Product Dimensions ‏ : ‎ 2.5 x 2.5 x 5.5 inches; 9.6 ounces


UPC ‏ : ‎


Manufacturer ‏ : ‎ K18 Hair


Best Sellers Rank: #5,562 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #162 in Hair Shampoo


#162 in Hair Shampoo:


Customer Reviews: 4.6 4.6 out of 5 stars (1,392)


Item Form: Cream


Hair Type: Normal


Scent Name: Fresh


Other Special Features of the Product: Unscented


Product Benefits: Our K18PEPTIDE™ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all


Suitable Hair Color: All Hair Colors


Brand Name: K18


Age Range Description: Adult


UPC: 858511000749


Manufacturer Part Number:


Manufacturer: K18 Hair


Liquid Volume: 8.5 Fluid Ounces


Number of Items: 1


Item Weight: 9.6 ounces


Item Dimensions: 2.5 x 2.5 x 5.5 inches


Unit Count: 8.5 Ounce


Material Type Free: Cruelty Free, Vegan


Recommended Uses For Product: Massage into hair, focusing on the scalp. Thoroughly rinse & repeat as needed. This conditioner is safe to use every time you wash


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Apr 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • AHHHHH-MAZZZING!!!
Size: 8.5 Ounce (Pack of 1)
Amazing shampoo! First time I heard about K18 was from a new stylist - she put the K18 leave-in molecular repair hair mask on my hair after my bleach/color job and I love how it made my hair. I bought some for myself and used with my regular shampoo. Worked pretty good. Enough to buy more. Went to a new stylist and my hair got burnt up. Bad. So I tried this product and bought the K18 shampoo and WOWWWWW!!! - I can’t even believe the difference when used together! My fine, thin, very broken bleached hair looks much healthier and shinier after just 2 washes and 2 treatments with K18!! I wish I would have taken pics! I usually have to wash every day or every other day but went a whole week with using dry shampoo only once and it wasn’t dry at all. It feels and looks so much healthier! I can’t wait to try their K18 conditioner when I’m done with this treatment! (Ie: Use the treatment 4-6 times after shampooing with no conditioner then switch to conditioner and use the treatment just as needed!) I’m so glad I found this! Thank you K18!!! ... show more
Reviewed in the United States on February 4, 2026 by Jesus Loves and Saves
    • It’s simply YES
Size: 8.5 Ounce (Pack of 1)
I bleach and color my hair A LOT, to the point that my naturally medium dark brown hair is a white lavender grey. Normally this would be problematic with things like drying out, frizzing, brittle, damaged hair. But people can not get over how healthy my hair is! Not just looks but feels. One wash and my hair felt clean and light. I don’t feel like I am fighting to add moisture in my hair constantly. I wouldn’t say it’s a miracle worker, I still have minor breakage but all things considered, it is nothing like what it probably should be with that much bleach! Using the shampoo and conditioner for a few months now with both the oil and mask as needed, and I gotta say I am very pleased. Yes, it is expensive. I still feel a little bit of a gut punch every time I buy it, but I only wash my hair once a week so it lasts me awhile. This will strip a little color out when you wash. For me, that’s not so problematic but I could see it being an issue for people that use heavier coloring. I find the fragrance very pleasant. ... show more
Reviewed in the United States on April 7, 2026 by Madelyn
    • Shampoo
Size: 8.5 Ounce (Pack of 1)
My hair dresser suggested this as I have extensions. No fragrance which is great and even better is the frizz control using this shampoo and conditioner. This also conditions my heart. A must buy!
Reviewed in the United States on April 9, 2026 by Michelle
    • Worth it
Size: 1.8 Fl Oz (Pack of 1)
I have fine frizzy wavy hair. I thought it was unmanageable and uncontrollable for most of my life. I tried this shampoo and the same product's conditioner for about 2 weeks with a leave in mousse and the frizz was a lot more controlled, and my hair actually looks good now. I diffuse my scalp and the rest of the hair after adding the mousse. Then I braid it when it's 90% dry and wow. Thanks K18. Actually worth the price ... show more
Reviewed in the United States on March 29, 2026 by Margaret S.
    • Great everyday shampoo
Size: 8.5 Ounce (Pack of 1)
I love all my K18 products! Are they spendy, yes, but they are so worth the price. A little goes a long way when using this shampoo. It cleans my hair without stripping it or making my hair feel dry or brittle. Definitely recommend!
Reviewed in the United States on February 12, 2026 by Elizabeth C Bando
    • Not sure it’s worth the hype?
Size: 8.5 Ounce (Pack of 1)
I guess? Nice shampoo but wasn’t life changing. It washed my hair and had a nice scent— not too perfumed. I don’t want to knock it but I think it’s just fine. Hair is soft and moisturized.
Reviewed in the United States on July 4, 2025 by V. Makarewicz
    • Keeps your hair clean for days
Size: 8.5 Ounce (Pack of 1)
Great product
Reviewed in the United States on April 22, 2026 by Ewela
    • Best shampoo ever!
Size: 8.5 Ounce (Pack of 1)
I had heard about this line of hair products and tried the shampoo. My hair looks, feels and smells great! I typically use leave in conditioner to detangle my hair but no need after using this shampoo.
Reviewed in the United States on March 8, 2026 by Kim

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