did-you-kno:

This dye is basically a mood ring for
your hair. FIRE dye changes color in
response to you and your environment,
just like a 90s Hypercolor shirt. It’s
semi-permanent, available in a range
of colors from soft to bright, and shifts
hue based on fluctuating temperatures
and humidity levels. Source Source 2

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The Unseen/Christel Chaudet/Kieran Tudor/Mizzie Logan