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K18

K18 Peptide Prep™ Detox Shampoo - Color Safe Clarifying Shampoo for Build Up Removal - Gently Removes Dirt, Oil + Metals from Hard Water with Activated Charcoal + Salicylic Acid

  • Based on 2,674 reviews
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Sep 20
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Size: 8.5 Fl Oz (Pack of 1)


Features

  • Deep Detox + Scalp Reset: A clarifying shampoo designed to work as a hair and scalp build up remover for dirt, oils, metals from hard and tap water, and heavy product buildup. Creates a clean canvas for optimal results from the K18 mask.
  • Intentional Active Ingredients: The skincare-inspired formulation of this activated charcoal and salicylic acid shampoo helps absorb impurities and clear sebum buildup at the scalp without stripping essential moisture or lipids.
  • Clinically-Proven Clarifying: This deep cleansing shampoo helps remove 99% of product buildup*, 95% sebum* + 76% copper* after one wash for a visibly refreshed and clean feel.
  • Color-Safe Peptide Formula: Unlike harsh chelating or hard water shampoos, our patented K18PEPTIDE helps reduce protein loss to help keep hair feeling healthy and strong, while the pH-optimized lather protects your color.
  • How to Use: Use this hair detox in place of your regular shampoo 1x weekly or as needed. Massage into hair + scalp to remove excess buildup. Thoroughly rinse. Repeat as needed.

Description

When do I use the Detox Shampoo? Swap out your regular shampoo for this power wash 1x weekly or as needed. Everyone, regardless of hair type or product usage, should use a detox shampoo regularly to remove buildup, reset texture, and optimize the performance of products and stylers. What makes the Detox Shampoo special? This Detox Shampoo effectively clarifies hair of buildup and metals common in tap and hard water, including 99% of product buildup, 95% of sebum + 76% copper after just 1 wash. How does the Detox Shampoo work? The detox shampoo works from Activated Charcoal absorbing toxins, excess oils, and dirt in the hair and scalp, while Salicylic Acid clears sebum buildup in follicles without stripping hair of essential moisture and lipids. Will the Detox Shampoo dry my hair out? No, the Detox Shampoo will not dry your hair out. This non-stripping formula has a pH of 3.8-4.2 that won’t leave hair over-stripped. Will the Detox Shampoo strip color? No, the Detox Shampoo will not strip your color. This color-safe formula is optimized with pH 3.8-4.2 to help maintain your color, and uniquely targets common metals present in tap and hard water that can cause dullness. Detox Shampoo FutureIQ Serum Damage Shield Shampoo Damage Shield Conditioner AirWash Dry Shampoo Molecular Repair Oil Molecular Repair Mask

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


Item model number ‏ : ‎ K18-40035


UPC ‏ : ‎


Manufacturer ‏ : ‎ K18 Hair


Best Sellers Rank: #2,984 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #80 in Hair Shampoo


#80 in Hair Shampoo:


Customer Reviews: 4.6 4.6 out of 5 stars (2,674)


Item Form: Gel


Hair Type: Curly, Fine, Straight, chemically-treated-hair, textured-hair


Scent Name: Floral


Other Special Features of the Product: Dermatologist Tested


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


Suitable Hair Color: Black


Brand Name: K18


Age Range Description: Adult


Global Trade Identification Number: 66


UPC: 858511001166


Item Highlight: Color Safe Clarifying Shampoo Gently Removes Product Build Up, Dirt, Oil, Hard Water Metals With K18PEPTIDE + Salicylic Acid


Manufacturer: K18 Hair


Model Number: K18-40035


Manufacturer Part Number: K18-40035


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 Fluid Ounces


Material Type Free: Formaldehyde Donor Free


Active Ingredients: Salicylic Acid, salicylic_acid


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 20

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.

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Top Amazon Reviews

    • Excellent clarifying Shampoo
Size: 8.5 Fl Oz (Pack of 1)
Works great without drying your hair out. All of their products are wonderful. Though a bit of a learning curve. Ive read a lot of mixed results in the reviews. This particular product is to give your hair a good thorough cleaning of all those residues from hair products. It’s concentrated so you won’t need a ton. Just add a little see if it lathers add more as needed. I work it thru my hair down to the scalp. Then let it sit for bit to let it break down the residue. Slightly towel blot dry tour hair. Even better if you have a nice microfiber hair towel to just gently squeeze and blot your hair to remove excess water but leave it still damp wet. You’re not drying it. You’re preparing it for the conditioning stage in step 2. This is imprtant, Especially for curly hair. (I have a hair wrap towel from Diva Curls and I love it!) This step is to remove excess water but leave it still wet enough to help when you apply the conditioner step. Then move on to and finally the hair oil. That seals and protects the hair and helps it to be soft and shiny I think the success of these products really is dependent on using each products in its order. Just learn about each one a bit before you dive right in. They're costly and so learning how to use them will help you not burn right thru it. I have fine hair but it’s also very thick and curly. I’m almost done with my first full size order. I tried a sample kit first. Then purchased the full size shampoo the conditioner and the hair oil. And you may be shocked at the size of the conditioner as I’m a person who typically load my hair with it as I tend to have dry curly ends. And my first thought was this can’t be right it’s too small. It requires very little. I do however have to use more to really get it fully saturated. That’s my one complaint. It’s a lot of money and that took some adjusting. Hence the advice to learn about what your buying and potentially using. I’d recommend these products. I’m curious to see how this company evolves. I hope this is helpful information. ... show more
Reviewed in the United States on March 8, 2026 by Jamie Corpus
    • Must have
Size: 16 Fl Oz
This is the best shampoo I’ve ever used! I’ve already told all my friends about it and will definitely be purchasing it again. It does exactly what it promises, leaving my hair feeling incredibly clean, refreshed, and healthy. I highly recommend it!
Reviewed in the United States on July 1, 2026 by Rosemary B
    • Beyond impressed
Size: 16 Fl Oz
I am positively thrilled by how revitalized my hair feels after using this incredible shampoo. Initially, I hesitated, thinking perhaps the glowing reviews I had read were embellished; however, to my astonishment, this product truly lives up to the hype. The softness and overall improved condition of my hair are beyond my expectations. It's undeniable—this shampoo has transformed my hair care routine, and I am eager to incorporate it into my weekly regimen going forward. The unparalleled cleanliness and vitality my hair now exudes thanks to this remarkable product is truly a game-changer. ... show more
Reviewed in the United States on March 21, 2026 by Darkastlec7
    • Amazing for Removing Build-Up Without Drying Out My Hair
Size: 16 Fl Oz
Review Image by Rock
I absolutely love this shampoo for my curls. I use it once a week as part of my wash-day routine, and it does an amazing job removing buildup without leaving my hair feeling stripped or dry. After using it, my hair looks healthy, shiny, and refreshed. My curls feel lighter and more defined, and the scent is incredible. It leaves my hair feeling clean while still maintaining moisture, which can be hard to find in a clarifying shampoo. This has become a staple in my hair care routine, and I highly recommend it for anyone looking to keep their hair healthy and vibrant. ... show more
Reviewed in the United States on June 15, 2026 by Rock
    • Solved All My Hair Problems
Size: 8.5 Fl Oz (Pack of 1)
Review Image by Jenni
I am 71 years old with thin, baby-fine hair. I’ve always had a problem with every product designed for volume weighing my hair down. I tried K-18 on a whim and it is exactly what I’ve been looking for! My hair feels soft, is shiny, looks bouncy and hydrated and best of all, not greasy! I bought the whole line and I love it all. It’s expensive, but you only use a tiny bit. An added bonus, I see very little hair in my brush or shower and lots of baby hair growing in. The picture is just after I washed it with K18 shampoo, no conditioner, and 1 pump of the K18 leave-in mask. I imagine it would work as well for any hair type, but it is a real game changer for fine, thin hair. ... show more
Reviewed in the United States on May 6, 2026 by Jenni
    • Best shampoo!
Size: 16 Fl Oz
This is the best shampoo if you go long stretches without washing. Makes my hair super clean but doesn’t dry it out. Worth the price point.
Reviewed in the United States on July 5, 2026 by Amazon Customer
    • Happy Hair Happier Me
Size: 8.5 Fl Oz (Pack of 1)
I have MS and my newest treatment is causing havoc on my hair! It became brittle, dry, shedding and I had an odd chemical smell! I researched how to help this situation and hands down, this shampoo and conditioner combo was recommended over everything else. I am so glad I purchased them. The detox shampoo left my hair feeling better to the touch and got rid of the chemical smell. I followed with the conditioner and my hair felt better than it did in months. It was smoother, shinier, and much more manageable to style. It was effective in helping me with my issues. I did find it a bit expensive, so I’m using it just every so often to make it last longer. I’m still getting great results spacing out the usage. I highly recommend this if you take medications or are having chemo to help your hair. ... show more
Reviewed in the United States on June 29, 2026 by Lisa M.
    • Nice shampoo cleans well
Size: 8.5 Fl Oz (Pack of 1)
This works wonders. Helps clean my hair really well. Lathers nicely and smells good. I use it ever 3-4days than once a week since I used to get greasy quick. But i have noticed this helps the greasy hair not get greasy as quickly. I could go longer than 4 days (I have alot of products I use to make my head greasy) I usually use this shampoo for the first wash and use my other shampoo for the second wash to give my hair some hydration. Overall great shampoo. ... show more
Reviewed in the United States on April 27, 2026 by Dayna Ramay

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