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We’ve got answers! Whether you’re a hair dye virgin or a total dye hard, we’ve got all the pointers you need to get the Instagram-ready color of your dreams.
Because we’re the OGs in colorful vegan and cruelty-free hair color. But if that’s not reason enough, our hair colors are free of harsh chemicals and fortified to condition your hair while you color. With each Manic Panic® color, you can get the DIY look without the damage. That’s color without compromise!
Before coloring your hair, you should perform a patch or strand test with your hair color or bleach to make sure you don’t have any allergic reactions. You can also see if you like the color before coloring your hair all over!
Yes and no. Some of our colors (especially neons, UVs, and pastels) work best on a pre-lightened base. If you want our signature intense color, we recommend lightening your hair to at least a level 7+ blonde. But we also have colors that give gorgeous colorful tints to dark hair. Each product on our website comes with hair swatches so you can see before and after results on light and dark hair.
Your base color is SUPER important since it affects the appearance of tones. If you apply blue pigment on top of a yellow-toned blonde, the results can veer toward a more teal or green hue. The whiter the hair, the truer the color tone. Before you color your hair blue, watch a tutorial by Mykey O’Halloran on how to avoid green tints!
Our semi-permanent formula lasts for about 4-6 weeks. But stronger formulas (like our Amplified collection) last longer because they contain 30% more pigment.
If you want to fight the fade for longer, we have color-safe shampoos and conditioners made specifically to maintain our hair colors. Use cool water when shampooing and try to wash hair only once a week (the more you wash, the faster the color fades). We also have dry shampoo to keep your color fresh on days when you skip a wash.
Shade
Mermaid®
⌄
More Green Hair Dye Shades
GUILT-FREE GLAMOUR!®
Mermaid is a cool ocean-blue neon hair dye with slightly green undertones.
Tested on celebrities, not animals™.
dye like you mean it
Our semi-permanent hair colors shine brighter and bolder for much, MUCH longer than other dye brands.
Your hair, your vision, your way! Get a salon-quality dye job in the comfort of your own home.
100% vegan and cruelty free since ‘77. You can always count on Manic Panic to bring the Guilt-Free Glamour.
Overall rating: 4.4 / 5 from 10 reviews.
Review topics: ["color","blue"].
"I’m someone who’s in the pool roughly 5 times a week, so have grown to expect hair dye to fade out fairly quickly. This is the only dye I’ve tried that’s not only still been visible after a week’s worth of swimming but still looked good. Definitely fades pretty quickly at first but stays at a nice lighter blue for a while, even on medium blonde hair. Highly recommend to anyone who’s not able to do the best of haircare for whatever reason but still wants a long-lasting shade"
— S (5/5)
"iོ lོiོkོeོ iོtོ tོhོaོnོkོ yོoོuོ gོoོtོtོaོ gོeོtོ mོoོrོeོ sོoོmོeོ dོiོfོfོeོrོeོnོtོ cོoོlོoོrོsོ"
— Jessica (3/5)
"i used a lot Blue Mermaid. but last time i bought it, is was more green than blue. More Green ocean than the blue mermaid i was used to since few years. did i bought a bad batch, or is this a undisclosed changes?"
— xuan (3/5)
"Vivid color, easy to use! Looks great on my kiddo!"
— Christina (5/5)
"I loves the colors"
— Edwina P. (5/5)
"I always loved Manic Panic dyes. They are one of the few that can last past 5 washes and while that may not seem like a lot. I've actually gone months with colored hair which makes me very very happy!"
— Angela S. (5/5)
"I am happy with some colors but, others didn't pan out. the pink washed out straight away, and didn't glow in black light well, the yellow, and orange I used didn't stay in either. My green and blue had no problem. I got a rainbow 🌈 of colors that are supposed to glow in the dark but only the green did."
— Krystal S. (3/5)
"Rated 5 stars without comment"
— Anonymous (5/5)
"Rated 5 stars without comment"
— Jessicabledsoe (5/5)
"Rated 5 stars without comment"
— Anonymous (5/5)
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