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.

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

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4.9

Rated 4.9 out of 5 stars

543 Reviews

mini PEPTIDE PREP™ detox shampoo

Name: mini PEPTIDE PREP™ detox shampoo 1.8oz
Brand: K18Hair
SKU: K18-40034L
Price: 14.00 USD
Availability: InStock
Rating: 4.9 (543 reviews)

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

mini PEPTIDE PREP™ detox shampoo 1.8oz $14.00

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

Swap out your regular shampoo for this power wash 1x weekly or as needed.
Massage into hair + scalp to remove excess buildup.
Thoroughly rinse.
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, Fragrance (Parfum), Benzyl Salicylate, Limonene.

pairs well with

K18 molecular repair hair oil

4.8

Rated 4.8 out of 5 stars

835 Reviews

Weightless oil that strengthens, repairs damage + reduces frizz

full-size leave-in molecular repair hair mask

4.7

Rated 4.7 out of 5 stars

8,356 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

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

product buildup

sebum

copper

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

EXPLORE THE SCIENCE

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

Is Your Water Ruining Your Hair?

Meet the once-a-week clarifying power wash that resets buildup, minerals + metals in one use.

What is clarifying shampoo?

Hint: It tackles product buildup + boosts the efficacy of other 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 + recommendations to help you get the most out of K18.

molecular repair for curly + coily hair

looking to restore your natural curl pattern? you need K18.

How Often Should I Wash My Hair?

There’s no one-size-fits-all approach to cleansing—but there are science-backed guidelines.

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 543 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.

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543 reviews

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April L.
Verified Buyer
Reviewing
mini PEPTIDE PREP™ detox shampoo 1.8oz
I recommend this product
Age 45 - 54
Hair Concern Frizz, Heat damage, Extending time between washes
Hair Type Medium Density
My Results Less Frizz, Soft Touchable Hair, Smoother Hair
Rated 5 out of 5 stars
3 days ago
Whoa
Impressive. I found product on Rachel Hollis review and I didn’t know what to expect. The sample arrived fast and I’ll be purchasing again. Hair feels clean and free from any buildup.
Was this helpful?
K
K18Hair
Yesterday
Thank you for your review, April!
Kimberly E.
Verified Buyer
Reviewing
detox shampoo sample
I recommend this product
Rated 5 out of 5 stars
1 month ago
Game Changer of a Product
K18 products have truly been wonderful for my hair. I had a coworker compliment me on the health of my hair. She wanted to know what I had been doing differently to it. I shared these K18 products. I’ve used other hair brands but this K18 is something way different in a league of its own. This is the best hair products I’ve ever used in my 50 years on this earth!
Was this helpful?
K
K18Hair
1 month ago
Wow, what an incredible review! We’re so glad to hear that K18 has made such a difference for your hair and that others are noticing too. Thank you for sharing your experience (and for spreading the word to your coworker!). It means so much to know that after trying so many products over the years, K18 stands out as a favorite for you.
Shirley P.
Verified Buyer
Reviewing
PEPTIDE PREP™ detox shampoo 8.5oz
I recommend this product
Age 25 - 34
Hair Concern Frizz, Extending time between washes
Hair Type Medium Density, Straight/Wavy
My Results Less Frizz, Less Breakage, Defined Curl/Wave Pattern, Shinier Hair, Soft Touchable Hair
Rated 5 out of 5 stars
2 months ago
Amazing detox shampoo
This shampoo makes my hair look and feel as if I just got out of a salon. Whether I want it blown out or wearing my naturally wavy/curly hair, this shampoo gets the job done every single time. Can’t live without it, I’ve been using this product for about 2 years and it never disappoints.
Was this helpful?
K
K18Hair
2 months ago
So happy to hear PEPTIDE PREP detox shampoo is giving you that salon-fresh feeling every time, Shirley! Love that it's working beautifully whether you're going for a blowout or embracing those natural waves and curls. Two years of never disappointing - that's exactly the kind of consistent results we were going for! Thanks for being such a loyal customer and sharing your experience!
Zhang N.
Verified Buyer
Reviewing
detox shampoo sample
I recommend this product
Rated 5 out of 5 stars
2 months ago
Amazing
Simple and effective. I’m in love with this
Was this helpful?
K
K18Hair
2 months ago
Simplicity is key! Thank you, Zhang!
Marisa M.
Verified Buyer
Reviewing
mini PEPTIDE PREP™ detox shampoo 1.8oz
I recommend this product
Age 45 - 54
Hair Concern Dryness, Frizz
Hair Type Grey Hair
My Results Smoother Hair
Rated 5 out of 5 stars
2 months ago
Clarifies hair
Removes build up and brassy with one wash
Was this helpful?
K
K18Hair
2 months ago
Thank you, Marisa! We appreciate your review!