Accessibility statement Skip to content
free returns. buy with confidence
free shipping on orders $50+*
PEPTIDE PREP™ detox shampoo 8.5 oz
Clarify. for less frequent heavy duty washing. just one wash removes 99% of product buildup*, 95% of sebum*, and 76% of copper*. Formulated with K18PEPTIDE™.
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
color-safe clarifying, clear the path for maximum K18 mask results
PEPTIDE PREP™ detox shampoo 8.5oz
how to use shampoos with your K18 mask. 1. shampoo, depending on level of clean needed detox or pH maintenance. 2. towel dry. 3. K18 leave-in mask. 4. wait 4 minutes. 5. style as usual.
PEPTIDE PREP™ detox shampoo
Mini versus full size product comparison
K18 routine guide
PEPTIDE PREP™ detox shampoo 8.5 oz
Clarify. for less frequent heavy duty washing. just one wash removes 99% of product buildup*, 95% of sebum*, and 76% of copper*. Formulated with K18PEPTIDE™.
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
color-safe clarifying, clear the path for maximum K18 mask results
PEPTIDE PREP™ detox shampoo 8.5oz
how to use shampoos with your K18 mask. 1. shampoo, depending on level of clean needed detox or pH maintenance. 2. towel dry. 3. K18 leave-in mask. 4. wait 4 minutes. 5. style as usual.
PEPTIDE PREP™ detox shampoo
Mini versus full size product comparison
K18 routine guide
4.9
Rated 4.9 out of 5 stars
670 Reviews

PEPTIDE PREP™ detox shampoo

Color-safe, non-stripping clarifying shampoo with the K18PEPTIDE™

Size:
8.5oz
Regular price $39
Regular price $0 Sale price $39
Save Infinity
Color:
8.5oz

Notify me when back in stock

PEPTIDE PREP™ detox shampoo 8.5 oz

The PEPTIDE PREP™ detox shampoo 8.5oz (Size: 8.5oz) isn't available now, but enter your email below and we'll notify you as soon as it's back.
OR
View Full Details
description

A color-safe, non-stripping clarifying shampoo with the K18PEPTIDE™ to gently but effectively remove 99% product buildup*, 95% sebum* + 76% copper* for detoxified, refreshed hair.


*Disclaimers

pH-optimized

clears excess buildup

17 ingredients + patented peptide

    • How to use

      1. Swap out your regular shampoo for this power wash 1x weekly or as needed.
      2. Massage into hair + scalp to remove excess buildup.
      3. Thoroughly rinse.
      4. Repeat as needed.

      Creates a clean canvas for optimal results from K18 molecular repair formulas.

    • more to know

      Deeply cleanses hair and scalp: A non-stripping, pH-optimized lather works to unclog hair follicles while banishing dirt, oils, metals from hard and tap water, and things left behind from heavy product buildup. Reduces 99% product buildup*, 95% sebum* + 76% copper* after just 1 wash.

      Clears the path: Intentional formulation means no fillers or deposits left behind leaving the cleanest canvas for maximum K18 Molecular Repair Leave-in Treatment results.

      Uniquely targets metals present in tap and hard water: Tackles common metals like nickel, cadmium, lead, zinc, iron that can cause dullness and buildup on the hair.

      *Disclaimers

    • Key benefits

      Intentional ingredients remove buildup without stripping:

      Purposeful formulation powered by active skincare-inspired ingredients (no fillers) to clean effectively without stripping it or messing with your color. Features 17 ingredients, plus our patented peptide.

      Activated charcoal absorbs toxins, excess oils, and dirt in the hair and scalp.

      **Salicylic Acid** clears sebum buildup in follicles without stripping hair of essential moisture and lipids.

      **K18PEPTIDE™** helps reduce protein loss to help keep hair feeling healthy and strong.

    • Ingredients

      Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Hydroxysultaine, Salicylic Acid, Charcoal Powder, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Caprylyl Glycol, Caprylhydroxamic Acid, Citric Acid, Potassium Hydroxide, Sodium Hydroxide, Sodium Chloride, Fragrance (Parfum), Benzyl Salicylate, Limonene, Hydroxycitronellal, Citrus Aurantium Dulcis Flower Oil, Citrus Aurantium Peel Oil, Citrus Limon Peel Oil, Tetramethyl Acetyloctahydronaphthalenes.

pairs well with
full-size leave-in molecular repair hair mask
FutureIQ™ biomimetic hair longevity serum
Press + and − keys to zoom, arrow keys to pan.
PEPTIDE PREP™ detox shampoo 8.5 oz
Clarify. for less frequent heavy duty washing. just one wash removes 99% of product buildup*, 95% of sebum*, and 76% of copper*. Formulated with K18PEPTIDE™.
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
color-safe clarifying, clear the path for maximum K18 mask results
PEPTIDE PREP™ detox shampoo 8.5oz
how to use shampoos with your K18 mask. 1. shampoo, depending on level of clean needed detox or pH maintenance. 2. towel dry. 3. K18 leave-in mask. 4. wait 4 minutes. 5. style as usual.
PEPTIDE PREP™ detox shampoo
Mini versus full size product comparison
K18 routine guide
PEPTIDE PREP™ detox shampoo 8.5 oz
Clarify. for less frequent heavy duty washing. just one wash removes 99% of product buildup*, 95% of sebum*, and 76% of copper*. Formulated with K18PEPTIDE™.
Grey curly hair before and after results using k18.
dark coily hair before + after styling with k18 hair products.
Red curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
color-safe clarifying, clear the path for maximum K18 mask results
PEPTIDE PREP™ detox shampoo 8.5oz
how to use shampoos with your K18 mask. 1. shampoo, depending on level of clean needed detox or pH maintenance. 2. towel dry. 3. K18 leave-in mask. 4. wait 4 minutes. 5. style as usual.
PEPTIDE PREP™ detox shampoo
Mini versus full size product comparison
K18 routine guide
your detox shampoo questions, answered
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—like K18 molecular repair.

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*. The pH-optimized formula is color-safe and won’t leave your hair over-stripped or easily tangled, while our patented K18PEPTIDE™ helps to maintain hair strength with no fillers or deposits left behind. BONUS: Clean hair helps optimize results from products and treatments, like K18 molecular repair formulas.
*Disclaimers

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. The K18PEPTIDE™ helps reduce protein loss to help keep hair feeling healthy and strong while you wash.

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. In a consumer study, 90%* said hair feels clean without feeling dry.
*Disclaimers

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.

 clinically proven clarifying removes
99%
product buildup
95%
sebum
76%
copper
Powered by K18PEPTIDE™

Biomimetic peptide helps reduce protein loss to help keep hair feeling healthy and strong.

Explore the Science Explore the Science
how to use detox shampoo

1. Swap out your regular shampoo for this power wash 1x weekly or as needed.
2. Massage into hair + scalp to remove excess buildup.
3. Thoroughly rinse.
4. Repeat as needed.

Creates a clean canvas for optimal results from K18 molecular repair formulas.

learn more on our blog
Is Your Water Ruining Your Hair?
/ products
Is Your Water Ruining Your Hair?
Meet the once-a-week clarifying power wash that resets buildup, minerals + me...
about Is Your Water Ruining Your Hair?
What is clarifying shampoo?
/ products
What is clarifying shampoo?
Hint: It tackles product buildup + boosts the efficacy of other products.
about What is clarifying shampoo?
FUNdamentals 19: Our detox removes metals too, here’s why…
/ products
FUNdamentals 19: Our detox removes metals too, here’s why…
You know what's fun? When your product works. We'll be breaking down key info...
about FUNdamentals 19: Our detox removes metals too, here’s why…
molecular repair for curly + coily hair
/ products
molecular repair for curly + coily hair
looking to restore your natural curl pattern? you need K18.
about molecular repair for curly + coily hair
How Often Should I Wash My Hair?
/ products
How Often Should I Wash My Hair?
There’s no one-size-fits-all approach to cleansing—but there are science-back...
about How Often Should I Wash My Hair?
View All Shop all new arrivals
feel what's possible with K18

See how K18 unlocks our community's expression

4.9
Rated 4.9 out of 5 stars
Based on 670 reviews
97%would recommend these products
Reviews Summary
Customers say this shampoo thoroughly cleanses without drying out their hair. Many reviews mention how effectively it removes product buildup while leaving hair soft and manageable. Users particularly appreciate that it produces rich lather and only requires a small amount per wash. Common feedback includes that hair feels clean and refreshed after use, with results lasting several days. While some note the price point is high, most find the weekly deep cleansing results worth the investment.
Customers Talked About
Write a Review (Opens in a new window)
670 reviews
  • Alyce H.
    Verified Buyer
    Reviewing
    PEPTIDE PREP™ detox shampoo 8.5oz
    I recommend this product
    Age 35 - 44
    Hair Concern Dryness
    Hair Type Curly/Coily
    My Results Defined Curl/Wave Pattern, Smoother Hair, Visible Difference
    Rated 5 out of 5 stars
    2 hours ago
    In love with this shampoo

    I love how my hair isn't dry after using a detox shampoo. My hair gets the product build up off but doesn't leave my hair dry. I have used this product three times.

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    1 hour ago

    Thank you so much for the love! 💙 We're thrilled to hear you're in love with PEPTIDE PREP™ and that it's delivering amazing results for your hair! ✨

  • Heather
    Reviewing
    PEPTIDE PREP™ detox shampoo 8.5oz
    I recommend this product
    Rated 5 out of 5 stars
    8 hours ago
    5 Stars

    I love this product! I live in a state with significantly hard water, which ends up, leaving a lot of buildup on my scalp. I also color my hair regularly. I love that I can use this and it does not disrupt my color!

    Was this helpful?
  • Heather
    Reviewing
    PEPTIDE PREP™ detox shampoo 8.5oz
    I recommend this product
    Rated 5 out of 5 stars
    8 hours ago
    5 Stars

    I love this product! I live in a state with significantly hard water, which ends up, leaving a lot of buildup on my scalp. I also color my hair regularly. I love that I can use this and it does not disrupt my color!

    Was this helpful?
  • Samantha P.
    Verified Buyer
    Reviewing
    PEPTIDE PREP™ detox shampoo 8.5oz
    I recommend this product
    Age 35 - 44
    Hair Concern Dryness, Frizz, Split-Ends, Heat damage
    Hair Type Curly/Coily, Medium Density
    My Results Less Frizz, Bouncy Hair, Visible Difference, Stronger Hair, Smoother Hair
    Rated 5 out of 5 stars
    8 hours ago
    Scalp refresh

    My scalp immediately felt clean! There’s no other feeling than not having to use multiple products in order to get a fresh scalp! One and done did it for me with the k18 detox shampoo

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    7 hours ago

    Thank you so much for the 5-star review, Samantha! 💙 We're thrilled to hear that PEPTIDE PREP™ is giving you that instant scalp refresh you love! ✨

  • Sarah M.
    Verified Buyer
    Reviewing
    detox shampoo sample
    I recommend this product
    Rated 4 out of 5 stars
    3 days ago
    Worked great, but probably not a must have for occasional use

    I liked this for occasional detox and it worked very well, however I am not sure it worked better than other options on the market for occasional use.

    Was this helpful?
    K Profile picture for K18Hair
    K18Hair
    3 days ago

    Thank you so much for taking the time to try the detox shampoo sample and share your honest feedback, Sarah! We're glad to hear it worked well for you and appreciate you giving it 4 stars.

*Disclaimers

10