Fashion

Pravana's Color-Changing Hair Dye is a Science Experiment on Your Head

Staying on top of trends means a constantly rotating wardrobe. Exhausting? Yes. Worth it? Questionable. In the fickle style race to be the most fashion-forward, we can't think of anything that could keep you as ahead of the curve as hair color that literally changes on your head throughout a single day. Keep up, posers.

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It's Just A Phase, Mom!

Dyeing your hair is a classic middle-schoolian demonstration of rebellion. But once you've grown out of all that, it can be a fun way to experiment with your look at any age. Why not? Pravana Vivids Mood Color is the first ever color-changing hair dye. It's not a dye, but an overlay: This stuff offers temporary color that changes throughout the day with the temperature, and washes out when you're ready to return to normalcy. You can sport a cool violet mop in the office, and go baby pink when you step outside to a warm breeze. A rainbow at your disposal, no commitment — or hair damage.

There are four color combinations of Vivid Mood Color. When exposed to heat, the first color warps into the second:

  • Cool Violet > Warm Pink
  • Smokey Gray > Invisible
  • Lime Green > Sunny Yellow
  • Tropical Peach > Invisible

You can try Pravana's Vivids Mood Color for a limited time at SalonCentric, State|RDA Pro-Mart, Four Star Beauty, and East Coast Salon Services. You know, for science. (Bonus tip for the bolder types: Mix it together with the glow-in-the-dark hair that lit the internet up in 2016, and BAM. Talk about making a statement.)

Very Hairy Science

According to INSIDER, "The dye is made of heat-reactive pigmented molecules held together by a solvent. When cool, the solvent keeps the dye in a solid state. When exposed to heat, the solvent softens and reveals another color."

Basically, it's like painting a mood ring onto your head, and the science is similar. Mood rings rely on liquid crystals to create their signature color-changing spectacle. These thermotropic liquid crystals are sensitive enough to change position when exposed to different temperatures. When the crystals' molecular structures twist around according to the temp changes, wavelengths of light are either absorbed or reflected, resulting in an apparent change in color.

As HowStuffWorks explains in regards to mood rings, as the temperature increases, the liquid crystal molecules twist in a way that absorbs more red and green light, and reflects the blue. This will make the mood ring appear dark blue. When the temperature dips, the molecules twist the other direction, reflecting blackness. In between the two extremes can give you other colors. See? Science is stylish.

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Color Changing Hair Dye

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