Mar 19, 2026 /featured, products
what does oxidation do to your blonde? How it happens, why it matters + what could be fading your color faster (plus, what you can do about...
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/ hair science

Why Isn’t Your Clients’ Hair Growing?

 The science of the growth cycle and the surprising way it impacts hair length.
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What Does Purple Shampoo Do To Gray Hair?

 Plus, how TripleBright uniquely brings out the best in all silvery tones with K18 triple-action technology.
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How to Use K18REPAIR™ + TripleBright Together

 Deliver soft, strong, bright blonde with every lightening service.
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Top TripleBright FAQs

 Answers to your most asked purple shampoo questions for brighter, longer-lasting blonde.
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how to retail TripleBright purple shampoo?

 It’s more than a purple shampoo—so here’s exactly how to talk about it, with tips from a K18 expert.
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How to use TripleBright in your services

 The PRO guide to brighter, longer-lasting blonde for every highlighted + lifted client.
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