pro peptide starter kit

limited-edition set to reverse hair damage + FREE stylist swag

Rated 5.0 out of 5

Based on 14 reviews

Meet the pro peptide starter kit, engineered to power your creativity with science, simplicity, speed, and a little bit of rebellion. The PRO service resets + repairs hair before, during, and after every step of the salon process for the healthiest canvas to create on. Minimum 50 treatments per kit. Cool.

You get:

(1) pro peptide starter kit – (2) 150ml PRO mists + (1) 150ml PRO mask
(4) try-it-size 5ml masks
(1) K18 continuous, aerosol-free sprayer
(1) reusable rainbow tote bag

Quantities are limited, so snag this exclusive set + FREE stylist swag while supplies last. Limit one per order while supplies last.

Repairs Damage Caused By

Bleach + Color
Heat
Chemical Services

Professional Only

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Every purchase supports K18 x Plastic Bank efforts to radically simplify waste.

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2.6M+ single use plastic bottles from reaching the ocean

more to know

Together, the PRO mist + PRO mask make the ultimate Peptide Power Couple—a dynamic duo if you will. Made to amplify each other, most services call for the renewal power of both, but check our service guide for specifics on when to use each formula.

how to optimize K18

Do clarify before K18 if you’re a heavy product user (demineralize for hard water buildup)
Do apply on clean, damp hair (think about 65% wet)
Do wait the full 4 minutes before combing or styling
Do add whatever styling products you love after the 4 minutes
Don’t use conditioner before applying K18 Mask (you can apply after the 4 min but most find they don’t need it)
Apply a generous amount of the PRO Mist, Don’t overdo it with the mask—less is more
Don’t rinse it out

Key benefits

Infused with our patented K18Peptide™, clinically proven to reverse damage in just 4 minutes.
Repairs damage from bleach + color, chemical services, and heat.
Restores strength, softness, smoothness, and bounce for all hair types.
Progressive results get better with each use and don’t wash away
Vegan, color-safe, cruelty-free
With just one salon treatment using the K18 PRO Service (K18 PRO mist + K18 PRO mask), hair is restored up to:

91% original strength* 94% original elasticity*

*Results observed in a clinical study while using mist and mask as part of a bleaching treatment. Results may vary depending on hair type, quality, and history.

ingredients

the PRO service

Pro Mist Ingredients: Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Polysorbate 20, sh-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Phenoxyethanol, Potassium Sorbate, Potassium Hydroxide, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.

Pro Mask Ingredients: Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20,sh-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.

Description

You get:

(1) pro peptide starter kit – (2) 150ml PRO mists + (1) 150ml PRO mask
(4) try-it-size 5ml masks
(1) K18 continuous, aerosol-free sprayer
(1) reusable rainbow tote bag

Quantities are limited, so snag this exclusive set + FREE stylist swag while supplies last. Limit one per order while supplies last.

healthy hair starts
in the salon

Protect the strength & integrity of hair during an extreme color transformation with K18 Mist & Mask.

Restore & strengthen hair with K18 Mist & Mask during highlight and color services.

Bring brittle aging hair back to its youthful state with K18 Mask & Mist.

how to use K18

lightener / bleach
1. Prep hair by lightly misting with water.
2. Generously apply K18 PRO mist section by section.
3. Wait 4 minutes to allow K18 to penetrate hair strands. DO NOT rinse out (this is a good time to mix color or prepare your lightening service.)
4. Dry hair if needed. Apply the lightener directly on top of K18 PRO mist and process as usual.
5. Shampoo hair, do not condition. Towel dry thoroughly until about 65% damp.
6. Start with 1 pump at a time of the K18 PRO mask, spreading it between your hands to evenly distribute the highly concentrated formula (add more as needed to encounter any missed strands. Average use is 2 pumps, most extreme thick or curly–coily hair use 3 pumps max.)
7. Leave for 4 minutes before styling. DO NOT rinse out.
8. If toning, apply toner or gloss on top of K18 PRO mask. Process toner or gloss as required. Shampoo and rinse. Towel dry thoroughly. Follow with a secondary application of K18 PRO mask.
9. Wait 4 minutes before combing, then style, and add product as usual.
color
1. Prep hair by lightly misting with water
2. Generously apply K18 PRO mist section by section.
3. Wait 4 minutes to allow K18 to penetrate hair strands. DO NOT rinse out (this is a good time to mix or prepare for your color service.)
4. Dry hair if needed. Apply color directly on top of K18 PRO mist and process as usual.
5. Shampoo hair, do not condition. Towel dry thoroughly until about 65% wet.
6. Start with 1 pump at a time of the K18 PRO mask, spreading it between your hands to evenly distribute the highly concentrated formula (add more as needed to encounter any missed strands. Average use is 2 pumps, most extreme thick or curly–coily hair use 3 pumps max.
7. Wait 4 minutes before combing, then style and add product as usual.
keratin straightener
1. Prep hair by lightly misting with water.
2. Generously apply K18 PRO mist section by section.
3. Wait 4 minutes for K18 to penetrate. DO NOT rinse out.
4. Clarify per your keratin straightener instructions (1-7 times).
5. Apply and process keratin straightener as usual.
*for best results, wait 3-4 shampoos post-treatment before using the K18 PRO mask in the salon or at home.
relaxer
1. Prep hair by lightly misting with water.
2. Generously apply K18 PRO mist section by section.
3. Wait 4 minutes to allow K18 to penetrate hair strands. DO NOT rinse out. (this is a good time to prepare your relaxer solution.)
4. Apply relaxer directly on top of K18 PRO mist and process as usual.
5. Start with 1 pump at a time of the K18 PRO mask, spreading it between your hands to evenly distribute the highly concentrated formula (add more as needed to encounter any missed strands. Average use is 2 pumps, most extreme thick or curly–coily hair use 3 pumps max.)
6. Let sit for 4 minutes to activate.
7. Follow with neutralizing shampoo, do not conditioner. Towel dry thoroughly until about 65% wet.
8. Re-apply K18 PRO mask. Wait 4 minutes before combing, then style and add product as usual.
perm
1. Prep hair by lightly misting with water.
2. Generously apply K18 PRO mist section by section.
3. Wait 4 minutes to allow K18 to penetrate hair strands. DO NOT rinse (use this time to prepare your perm solution.)
4. Apply perm solution directly on top of mist.
5. Rinse and follow with neutralizer as usual.
6. Rinse neutralizer and re-apply K18 PRO mist. Let sit for 4 minutes before styling.
*don’t use K18 PRO mask after your perm service to avoid weighing down fresh curls.
thermal reconditioner
1. Prep hair by lightly misting with water.
2. Generously apply K18 PRO mist section by section.
3. Wait 4 minutes for K18 to penetrate. DO NOT rinse out. (this is a good time to prepare your thermal reconditioner solution.)
4. Apply and process as usual.
5. Rinse and apply neutralizer.
6. Once neutralizer has processed, rinse, lightly shampoo, then towel dry thoroughly until about 65% wet.
7. Start with 1 pump at a time of the K18 PRO mask, spreading it between your hands to evenly distribute the highly concentrated formula (add more as needed to encounter any missed strands. Average use is 2 pumps, most extreme thick or curly–coily hair use 3 pumps max.)
8. Wait 4 minutes before combing, then style and add product as usual.

how K18 works

Traveling into the innermost layers of hair, our K18Peptide™ renews strength along the width AND length of hair for lasting strength where it matters.

have questions?

we have answers.

why is k18 mist applied before bleaching / coloring?

K18 mist is applied before bleach or color services because it works on renewing client’s existing damage to strengthen the hair canvas pre-treatment. Restoring strength and elasticity in just 4 minutes means the stylist’s work can go further without having to edit process around damage. The K18 mist’s liquid formulation optimizes the efficacy of the K18Peptide™ by opening up the hair’s cuticle layers and getting the renewing peptide deep into hair’s inner cortex to repair broken polypeptide chains (keratin chains).

how is the k18 mist applied before a chemical service?

Follow these steps for best use:
- Prep hair by lightly misting with water.
- Apply K18 Mist section by section, the amount needed depends on client’s hair type and condition. Reference chart for approximate dosage.
- Wait 4 minutes. DO NOT rinse out. This is a good time to mix or prepare for your chemical service. You can dry hair after the 4 minutes are up, if needed.

why do i need to mist the hair with water before applying the k18 mist?

Misting the hair with water allows the cuticle layers to prepare for optimal penetration of the mist into the inner cortex. In the same way a damp sponge absorbs more water, damp hair absorbs K18.

how do you use k18 mask as part of a lighting or color service?

K18 Mask is used after processing bleach/color by following the below steps.
- Shampoo hair. Skip the conditioner.
- Towel-dry thoroughly.
- Apply K18 Mask, the amount needed depends on client’s hair type and condition. Reference chart for approximate dosage.
- Leave for 4 minutes before styling. DO NOT rinse out.
- If cutting, begin right away. Make sure to wait the full 4-minute wait period before heat styling.
- If toning, apply toner/gloss on top of K18 Mask. Process toner/gloss as required. Shampoo and rinse. Follow with a secondary application of K18 mask. Towel dry thoroughly. Style as usual.

will applying toner on top of k18 mask affect the outcome of my color?

K18 will not interfere with toner or final color. Colorists tell us K18 Mask actually improves their results, as it evens out the hair’s porosity, creating a more uniform and vibrant color application.

do you suggest using a clarifying shampoo before using k18? will k18 still work if there is a lot of product or buildup on hair?

In most cases, clarifying and/or detoxing is not needed prior to K18 use. However, if there is extreme coating of product or mineral buildup on the hair, we recommend clarifying before using K18 to clearway for our peptide to fully penetrate hair. Excess buildup can block the peptide from getting where it needs to go.

reviews

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average rating 5.0 out of 5

Based on 14 reviews

5 Stars

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14 Reviews

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Reviewed by Tiara N.

Verified Buyer

I recommend this product

Age

35 - 44

Hair Concern

Chemical damage

Hair Type

Medium Density

My Results

Stronger Hair
Less Breakage

Rated 5 out of 5

Review posted

Kit K18

I love how simple it is to use. Love the products

Was this helpful?

K18Hair PRO

Thank you for your review Tiara.

Reviewed by NANCY B.

Verified Buyer

I recommend this product

Age

45 - 54

Hair Concern

Chemical damage
Fragile/brittle hair
Frizz
Dryness

Hair Type

Fine/Thin
Curly/Coily
Straight/Wavy
Grey Hair

My Results

Visible Difference
Stronger Hair
Less Breakage
Shinier Hair
Smoother Hair

Rated 5 out of 5

Review posted

Great product!

This product is amazing! Hair is left feeling and looking great!

Was this helpful?

K18Hair PRO

Thank you for your review Nancy.

Reviewed by Lindsey h.

Verified Buyer

I recommend this product

Age

35 - 44

Hair Concern

Fragile/brittle hair

Hair Type

Straight/Wavy

My Results

Smoother Hair

Rated 5 out of 5

Review posted

Back bar

I need this every client

Was this helpful?

K18Hair PRO

Thank you for your review Lindsey.

Reviewed by Donald F.

Verified Buyer

I recommend this product

Age

25 - 34

Hair Concern

Chemical damage
Color-care

Hair Type

Medium Density

My Results

Stronger Hair
Less Breakage
Visible Difference
Soft Touchable Hair
Shinier Hair

Rated 5 out of 5

Review posted

God Tier!

Before I introduce new things to my clients I always try them out on myself and loved ones. K18 was no different. After the first use I noticed an immediate improvement on both myself and others.

One thing about me is I'm truly chaotic so I wanted to see just how far I could push K18's professional products. I wanted to understand the limitations to its magic before I proceeded to use it on clients. So I lightened my own hair three times in one week (I'd never do this to a client, but I wanted to see how far I could go). My hair felt like it'd never been touched by lightener even after the third session! (See photo) I still can't believe nothing melted off and there wasn't any breakage. I don't think there's any limitations to the looks I can achieve now that I've got k18 in my arsenal!

Was this helpful?

K18Hair PRO

Love this review Donald, and awesome photo! I wish I had K18 about 7 years ago when I bleached my hair 4 times in one night 🥲.

Reviewed by Paula P.

Verified Buyer

I recommend this product

Age

55 - 64

Hair Concern

Color-care

Hair Type

Medium Density

My Results

Visible Difference

Rated 5 out of 5

Review posted

K18

LOVE IT!

Was this helpful?

K18Hair PRO

Thank you for your review Paula!

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DOSAGE CALCULATION

pre-service

Apply a generous amount to damp hair, section by section

post-service

3 pumps
throughout the hair

How to use

Prep hair by lightly misting with water.
Apply K18 Mist section by section.
Wait 4 minutes. DO NOT rinse. (This is a good time to mix or prepare for your Lightening Service.)
Apply Lightener directly on top of K18 Mist. (Dry hair if needed prior to application.)
Process as usual.
Shampoo hair. Skip the conditioner.
Towel dry thoroughly.
Apply K18 Mask.
Leave for 4 minutes before styling. DO NOT rinse out.
If toning, apply toner / gloss on top of K18 Mask. Process toner / gloss as required. Shampoo and rinse. Towel dry thoroughly. Follow with secondary application of K18 Mask for 4 minutes.
Style as usual.

optimize K18

skip the conditioner

Conditioners coat hair making it harder for our K18Peptide™ to effectively penetrate strands and get into the inner layers of hair. We like to skip it so the peptide can get right to damage sites without interruption. If strands need a little more love, you can add a leave-in conditioner once the initial 4-minute wait period is over.

clarify first

Excessive product or mineral buildup on hair can prevent our K18Peptide™ from effectively penetrating strands. If hair is heavy with buildup, start with a clarifying treatment before using K18 to remove residue that may block our peptide from getting where it needs to go.

continue use

Damage is ongoing, so clients' use of K18 should be too. This progressive treatment makes hair healthier with each use. Continue their hair renewal at home by using K18 for the first 4-6 washes, then every 3-4 washes to maintain the integrity of damaged hair.

less is more

Our Pro Mask is highly concentrated, meaning a little goes a long way. Don’t oversaturate hair and refer to our dosage chart to find the optimal amount for each client’s hair type and service.

more is more

When using the Pro Mist, the more the merrier to reset damage before a chemical service. Use pre-service for a healthy canvas by applying a generous amount of the Pro Mist to damp hair, section by section.

made for all

K18 Pro Mist + Mask are compatible with all products and all hair types regardless of texture, generation, or level of damage.

optimize K18

clarify first

more is more

made for all

K18 Pro Mist + Mask are compatible with all products and all hair types regardless of texture, generation, or level of damage.

optimize K18

clarify first

continue use

more is more

made for all

K18 Pro Mist + Mask are compatible with all products and all hair types regardless of texture, generation, or level of damage.

optimize K18

skip the conditioner

clarify first

continue use

less is more

Our Pro Mask is highly concentrated, meaning a little goes a long way. Don’t oversaturate hair and refer to our dosage chart to find the optimal amount for each client’s hair type and service.

made for all

K18 Pro Mist + Mask are compatible with all products and all hair types regardless of texture, generation, or level of damage.

pro peptide starter kit

Repairs Damage Caused By

Professional Only

more to know

how to optimize K18

Key benefits

ingredients

Description

healthy hair starts
in the salon

how K18 works

have questions?

why is k18 mist applied before bleaching / coloring?

how is the k18 mist applied before a chemical service?

why do i need to mist the hair with water before applying the k18 mist?

how do you use k18 mask as part of a lighting or color service?

will applying toner on top of k18 mask affect the outcome of my color?

do you suggest using a clarifying shampoo before using k18? will k18 still work if there is a lot of product or buildup on hair?

Kit K18

K18Hair PRO

Great product!

K18Hair PRO

Back bar

K18Hair PRO

God Tier!

K18Hair PRO

K18

K18Hair PRO

recommended products

K18 Pro Dosage Calculator ×

Type of service

Hair length

Hair Thickness

based on your client + service

DOSAGE CALCULATION

How to use

did you know

pro peptide starter kit

Repairs Damage Caused By

Professional Only

more to know

how to optimize K18

Key benefits

ingredients

Description

healthy hair startsin the salon

how K18 works

have questions?

why is k18 mist applied before bleaching / coloring?

how is the k18 mist applied before a chemical service?

why do i need to mist the hair with water before applying the k18 mist?

how do you use k18 mask as part of a lighting or color service?

will applying toner on top of k18 mask affect the outcome of my color?

do you suggest using a clarifying shampoo before using k18? will k18 still work if there is a lot of product or buildup on hair?

Kit K18

K18Hair PRO

Great product!

K18Hair PRO

Back bar

K18Hair PRO

God Tier!

K18Hair PRO

K18

K18Hair PRO

recommended products

K18 Pro Dosage Calculator ×

Type of service

Hair length

Hair Thickness

based on your client + service

DOSAGE CALCULATION

How to use

client recommendation

At-Home Treatment

2 pumps

optimize K18

skip the conditioner

clarify first

continue use

less is more

more is more

made for all

optimize K18

clarify first

more is more

made for all

optimize K18

clarify first

continue use

more is more

made for all

optimize K18

skip the conditioner

clarify first

continue use

less is more

made for all

Type of service

Hair length

Hair Thickness

based on your client + service

DOSAGE CALCULATION

How to use

client recommendation

At-Home Treatment

2 pumps

optimize K18

skip the conditioner

clarify first

continue use

less is more

more is more

made for all

optimize K18

clarify first

more is more

made for all

healthy hair starts
in the salon