K18 Hair Care Blog

Jul 31, 2025 /featured, products

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Meet HeatBounce: Deeper Heat Protection Than Ever Before* Powered by new patented heat-shielding tech.

How Fortification + Repair Are Different (And Why You Need Both!)

Aug 09, 2024 / hair science

How Fortification + Repair Are Different (And Why You Need Both!)

What these terms mean and how K18REPAIR™ delivers both for healthier hair through every transformation.

The Science of Heat Protection by Oil

Jul 26, 2024 / hair science

The Science of Heat Protection by Oil

How hot tools impact hair on the molecular level, the role of lipids, and the surprising way to prevent damage with biotech.

The Truth Behind Tangles

Jul 22, 2024 / hair science

The Truth Behind Tangles

Plus, the science-backed routine for smooth hair inside + out.

Can Dull Hair Be Fixed?

Jul 10, 2024 / hair science

Can Dull Hair Be Fixed?

The science behind reviving shine from the inside.

How to Fight Frizz From Within

Jul 03, 2024 / hair science

How to Fight Frizz From Within

Discover the root cause deep inside hair and the proven molecular repair solution.

What Is Optimal Hair Hydration?

Jun 28, 2024 / hair science

What Is Optimal Hair Hydration?

The surprising science behind hair’s moisture content and how it impacts dryness, frizz + dullness from within.