Beyond Ammonia and MEA: Learning to Control the Volume
Why the evolution of hair colour chemistry may be less about power and more about precision. Well, It’s Been a While… Back in 2019, I wrote about the science behind oxidative hair colour, particularly the role of ammonia and monoethanolamine (MEA). Remember the debate? Ammonia versus ammonia-free. Which was better? Which was gentler? And which […]
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