2015 was the year of wild hair trends. And we're starting off 2016 the same way.
From galaxy shades to pumpkin spice ombres to fiery locks, if it could be justified as a color combination, it existed.
And 2016 will not be upstaged. Just two weeks into the year we're seeing a new craze light up Instagram: glow-in-the-dark rainbow hair.
A post shared by Lovely.asia (@lovelydotasia) on Dec 21, 2015 at 10:47pm PST
Also known as blacklight hair, the style feeds the desire to have fun-colored hair during the day, but takes it a step further. When standing under a blacklight, the streaks illuminate in the dark.
"Glow-in-the-dark is a fun trend that won't necessarily damage your hair, but keep in mind that bright colors tend to stain blondes," celebrity colorist Meaghan Frayne of New York city's Angelo David Salon told Mashable. "Always make sure your hair is conditioned before applying color."
See also: Glitter roots are your excuse for skipping the salon
A post shared by 🌙Misty Moon Graves🌙 (@mistymoongraves) on Dec 9, 2015 at 3:25am PST
Manic Panic's High Voltage Classic Cream Formula Hair Color is the product behind much of the glow-in-the-dark madness. While it's been on the market for years, the blacklight-sensitive dye is just picking up steam thanks to a few Instagram trailblazers.
A post shared by Claudia Fagundes (@claudiadoesmyhair) on Oct 5, 2015 at 6:37pm PDT
A post shared by Hairtastic (@the_princess_of_hair) on Sep 28, 2014 at 4:12pm PDT
The dye comes in a range of colors, from "Siren's Song" aqua and "Electric Lizard" green to "Hot Hot Pink" and "Fuchsia Shock."
And for those of you who never hopped on the rainbow hair train, don't fret. The dye is also available in more natural colors, such as "Raven" black and "Virgin Snow" blonde.
Snag a kit for yourself and get glowing.
More from Mashable:
Watercolor hair is a dreamy new coloring trend
Woman's body hair selfie gets attention for all the wrong reasons
How to make a hat out of your own hair, if you so choose