An actual witch invented it, so you know it’s legit.

Mood rings were one of the most exciting things about the 90s. An all-knowing piece of jewelry that picked up on your feels? Incredible. Now thanks to British witch Lauren Bowker, we’re getting the 2017 version of that genius 90s staple: color-changing “mood” hair dye.

The semi-permanent dye made waves earlier this month after it debuted at London Fashion Week. The dye, called FIRE, reacts to air and body temperature — so if your blood is boiling, your hair color can now reflect that. One dye lightens hair from black to red as temperatures rise, and another changes hair from platinum blonde to blue when temperatures fall below 60 degrees. There are reportedly seven different color-changing dyes to choose from.

Pretty revolutionary if you ask me.

Bowker, a 31-year-old designer, told Dazed she has “always been into the occults and into mixing stuff” like bath potions.

Though Bowker practices the magical arts, her products are all backed by science. She created several mood ring-like inventions under her design brand T H E U N S E E N, including a Swarovski gemstone headpiece that claims to change color according to brain activity, and a jacket that changes colors in response to pollution levels.

Lauren Bowker. |

To make FIRE, Bowker altered molecular bonds so that when they meet a certain temperature, a chemical reaction takes place to change hair color.

“However, we also work with [molecular bonds] that change their structure, which gives you a light refraction instead, so it’s more like a prism color change,” Bowker tells Hello Giggles. “If you have red hair and you’re in the wind it might go blue. So what we did was look at data patterns of weathers and the environment in different countries and tailor the color changes to correlate with those.”

In other words, if you’re someone who changes their hair color as often as Kylie Jenner, this may be the product for you. Unfortunately, the seven magical dyes haven’t been released to the public yet, but we’re crossing our fingers they come out soon. In the meantime, you can read up about T H E U N S E E N products on their official website.