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A bottle of K18 PEPTIDE PREP detox shampoo against a teal background.
infographic detailing the benefits of k18 detox shampoo.
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.
Mini detox shampoo next to the mini molecular repair mask.
Infographic explaining how to use the shampoo with the K18 mask on a blue background.
Mini versus full size product comparison
K18 routine guide
tile tsa-approved | color: blac
4.9
Rated 4.9 out of 5 stars
624 Reviews

mini PEPTIDE PREP™ detox shampoo

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

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
  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.

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

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.

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, Fragrance (Parfum), Benzyl Salicylate, Limonene.

pairs well with
K18 molecular repair hair oil
4.8
Rated 4.8 out of 5 stars
966 Reviews
Weightless oil that strengthens, repairs damage + reduces frizz
bestseller
full-size leave-in molecular repair hair mask
4.7
Rated 4.7 out of 5 stars
4,692 Reviews
4-minute leave-in treatment to reverse hair damage

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

your detox shampoo questions, answered
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.
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
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.
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
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
0
product buildup
0
sebum
0
copper
Powered by K18PEPTIDE™

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

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.
learn more on our blog
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 624 reviews
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.
624 reviews
  • Tammy O.
    Verified Buyer
    Reviewing
    Jumbo PEPTIDE PREP™ detox shampoo
    I recommend this product
    Age 18 - 24
    Hair Concern Oily hair/scalp, Extending time between washes
    Hair Type Thick/Coarse
    My Results Oil absorbed, Odor eliminated, Cleaner, fresher hair
    Rated 5 out of 5 stars
    Yesterday
    Detox Delight

    My daughter has super thick hair that’s oily. She’s tried many salon shampoos to help control the oil but most either dry her scalp or don’t work. Peptide Prep detox shampoo has been a game changer! Her hair is shoulder length & now she’s hopeful she will be able to grow it out a little more just in time for senior portraits! Thanks K18 for developing this shampoo!!!

  • Christine C.
    Verified Buyer
    Reviewing
    PEPTIDE PREP™ detox shampoo 8.5oz
    I recommend this product
    Age 55 - 64
    Hair Concern Dryness, Split-Ends, Chemical damage, Color-care, Heat damage
    Hair Type Fine/Thin
    My Results Visible Difference, Bouncy Hair, Stronger Hair, Less Breakage, Soft Touchable Hair
    Rated 4 out of 5 stars
    1 week ago
    Peptide Prep

    The K18 Peptide Prep line is designed to deeply cleanse without stripping, and it genuinely delivers on that promise. Both formulas leave the hair feeling clean, light, and balanced — the kind of “reset” that makes styling easier and helps other products work better.

    K Profile picture for K18Hair
    K18Hair
    5 days ago

    Thank you so much for this fantastic review, Christine! We're absolutely thrilled to hear that PEPTIDE PREP™ detox shampoo is delivering exactly what we designed it for - that perfect deep cleanse without stripping your hair! It's wonderful that you're experiencing that balanced, lightweight feeling and getting that amazing "reset" effect that makes styling so much easier. We're especially happy to hear how it's helping your other products work better too - that's exactly what we hoped to achieve with this chelating formula! Your feedback about how both formulas in the line are performing truly means the world to us, and we're so grateful to have you as part of our K18 community!

  • Caroline D.
    Verified Buyer
    Reviewing
    mini PEPTIDE PREP™ detox shampoo 1.8oz
    I recommend this product
    Age 18 - 24
    Hair Concern Heat damage, Color-care
    Hair Type Fine/Thin
    My Results Visible Difference, Less Breakage
    Rated 5 out of 5 stars
    3 weeks ago
    Great Product

    Love this product. I feel like it really brings my hair back to life and protects it from heat. great when coupled with the dry shampoo!

    K Profile picture for K18Hair
    K18Hair
    2 weeks ago

    Thank you so much for your incredible review, Caroline! We're absolutely thrilled to hear that our mini PEPTIDE PREP™ detox shampoo is bringing your hair back to life and that you're loving it paired with the dry shampoo - there's no better compliment than knowing our peptide technology is giving you that amazing revitalized feeling! ❤️

  • Jodi J.
    Verified Buyer
    Reviewing
    mini PEPTIDE PREP™ detox shampoo 1.8oz
    I recommend this product
    Age 55 - 64
    Hair Concern Dryness, Color-care, Frizz
    Hair Type Medium Density
    My Results Visible Difference, Soft Touchable Hair, Shinier Hair
    Rated 5 out of 5 stars
    2 months ago
    Great for well water

    This helped strip the heavy metals from my well water, following up with K18 mask, awesome!

    K Profile picture for K18Hair
    K18Hair
    2 months ago

    Thank you so much for your incredible review, Jodi! We're absolutely thrilled to hear that the mini PEPTIDE PREP™ detox shampoo worked so perfectly to strip those heavy metals from your well water, and what an amazing combination with the K18 mask - that powerful detox and molecular repair duo is truly unbeatable for getting your hair back to its healthiest state! ❤️

  • Natalie L.
    Verified Buyer
    Reviewing
    detox shampoo sample
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Helps with hard water

    I have hard water and it can turn my hair brassy so using this detox shampoo helps get my hair back to the blonde that I like

    K Profile picture for K18Hair
    K18Hair
    2 months ago

    Thank you so much for your wonderful review, Natalie! We're thrilled to hear that the detox shampoo is working so well for you with your hard water concerns - it's amazing how this powerful detox formula can help remove those mineral buildups that cause brassiness and get your blonde hair back to that beautiful shade you love!

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