Just when you thought the crazy hair trends were left back in 2015, glow-in-the-dark hair starting showing up on everyone's Insagram feeds. It's the year where we switch it up from soft pink and purple pastels to neon and bright colours. This look is perfect for your night time activities and can be done with popular at home hair dyes like Manic Panic and Splat. If you're feeling iffy about dying your hair these blacklight colours, you can use a rinse instead that shows up under the UV lights. The colours ranges from hot pinks, to bright blues and neon greens that will give you a glowing effect that would definitely stand out in a dark room.