For PROs, that creates a familiar cycle: blondes + any lifted tones gradually dull between appointments, requiring stronger toners, heavier detoxing, or more lightening to bring them back to optimal brightness, often at the expense of the hair’s health. 

TripleBright oxidation defense purple shampoo takes a totally different approach.

Instead of just covering up brassiness, it targets the underlying cause: oxidation from metals and minerals that accumulate in the hair when been exposed to metals and minerals in unfiltered tap water. Ionic detox removes those metals and minerals, neutralizes existing brassiness, and protects against future brass-casing buildup via a cutting-edge biopolymer, which allows PROs to both create and maintain a more vibrant color—without the murky tones that come with repeated toning.

And because it works both in-salon and at home, TripleBright can support clients before, during, and between services–driving some jaw-dropping blonde transformations and in turn, long-term loyalty.

Here’s how to incorporate K18’s newest innovation throughout a client’s color journey.

before the service → create a clean canvas

Blonde and highlighted results are only as good as the canvas underneath them, yet clients often arrive with a mix of environmental complications (metals, minerals, chlorine, product residue) that can interfere with color performance.

“Whether or not your client washes their hair before an appointment, oxidation and buildup can affect how color develops,” says Thorne. “Using TripleBright before the service helps remove that oxidation to create a more even starting point–ensuring a more predictable lift and better end results.” 

1 wash removes up to 3 months of brass from hard water*

This pre-service step not only creates a healthier foundation, it also maximizes the performance of the K18REPAIR™ service. 

your pre-service protocol

1. Shampoo with TripleBright to remove oxidation + buildup

2. Apply K18 PRO molecular repair mist to damp hair to restore elasticity 

3. Perform lightening or color service

post-color → refine tone

Traditionally, lightened hair is followed by a toner to adjust raw lift, but TripleBright offers a dramatically faster alternative, powered by K18 triple-action technology.

“Most toners take about 20 minutes to process, but TripleBright works in just 1 to 3, depending on the service,” says Thorne.

Unlike toners, which deposit pigment and reopen the cuticle, TripleBright’s precision violet technology neutralizes without overtoning and ensures ideal hair tone is restored and evened* for all highlighted and lifted tones*. Paired with the K18 PRO molecular repair mask, it delivers both superior tone refinement and deep damage repair—leaving hair brighter, stronger, and more reflective.

“The goal with blonde hair is to keep the hair as light as possible without allowing yellow to develop,” says Thorne. “TripleBright removes the underlying oxidation first, so the prismatic violet tone can enhance brightness versus just neutralizing brass–allowing your transformative superpowers as a PRO colorist to really shine through.”

pro protocol

1. Remove lightener (with peptide prep™ detox shampoo)

2. Towel dry

3. Apply TripleBright for 1–3 minutes, depending on the level of intensity your client is looking for

4. Rinse and follow with K18 PRO molecular repair mask for repair

between appointments →  maintain brightness

Oxidation doesn’t stop once a client leaves the salon. Environmental exposure from unfiltered tap water, UV rays, and heat styling all get to work instantly and end up dulling color over time. 

Consistent use of TripleBright helps prevent oxidation from accumulating, safeguarding color and boosting brightness between salon visits to keep it at its ideal tone.

“Every time you use TripleBright, you’re reinforcing that protection against oxidation with its trifecta of ionic detox, precision violet tech, and the biopolymer,” says Thorne. “That’s why we recommend clients incorporate it at least once a week into their routine.”

at-home weekly protocol

1. Shampoo with TripleBright (leave on1–3 minutes)

2. Follow with K18 PRO molecular repair mask

For busy clients, this routine can be split: “If they don’t have time for both treatments, encourage them to alternate,” adds Thorne. “Using TripleBright one wash followed by damage shield™ conditioner, and the mask the next wash.”

For clients with significant buildup at the scalp, Thorne also suggests starting with peptide prep™ detox shampoo, then following with TripleBright to maximize results.

how to explain TripleBright to clients

Rather than presenting products only at checkout, Thorne recommends talking clients through what you’re using during the service.

“Every time I transition between steps, I explain what I’m doing and why,” she says. “Clients are paying close attention to what’s happening to their hair in that moment, so it’s your chance to really show them how to use products with intention versus trying to ‘hard sell.’”

A few simple cues like this can help reinforce the value:

1. explain in real time
When you switch steps, narrate it:
“I’m using TripleBright to remove oxidation so your color stays brighter between visits.”

2. show the product
Let clients see what you’re using, and how much.

3. sell the routine
Position it as part of a system:
peptide prep™ detox shampoo → TripleBright → molecular repair mask → damage shield™ conditioner

4. give a simple prescription
“Use TripleBright once a week, leave it on for 1–3 minutes.”

5. think long-term 
If they don’t buy today, they’ll remember the recommendation when their color starts to dull or yellow (and likely come running back).