But what’s happening on a chemical level that allows hair dye to provide such speedy and dramatic results?

We atAllure’sThe Science of Beauty podcastthought it was high time to investigate.

To get your gears going in the meantime, though, here are three of the most fascinating takeaways.

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A hair colourist applying pink hair colour to a client’s long blonde hair.

The act of dyeing one’s hair is far from a modern concept.

Your natural hair color is a matter of melanin.

The hair dye used at salons is generally no different than at-home formulas.

A trained professional can customize blends to create more nuanced colors, she adds.

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