Didn’t work at all
"Price has increased since the last time I bought it and not only that but the bottle size shrunk as well. The purple in two days turned into a dark blue. It also appeared splotchy and old one day after I dyed."
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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.
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More Purple Hair Dye Shades
GUILT-FREE GLAMOUR!®
Electric Amethyst is a bright purple hair dye with violet/blue undertones. For best results, always use semipermanent hair color on pre-lightened level 7/8 blonde before applying. This color dilutes to a gorgeous lilac on platinum hair when mixed with softer shades or Pastelizer! Want to deepen it? Just add tiny drops of Raven!

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: 4.0 / 5 from 36 reviews.
Electric Amethyst™ - Classic High Voltage® is a bright purple semi-permanent hair dye with violet/blue undertones. Customers praise its vibrant and stunning color, which dilutes to a lilac on platinum hair. It is vegan-friendly, PPD-free, and comes with conditioning benefits and resealable packaging.
Review topics: [color, purple].
"Price has increased since the last time I bought it and not only that but the bottle size shrunk as well. The purple in two days turned into a dark blue. It also appeared splotchy and old one day after I dyed."
— Vincent U. (2/5)
"Usei um pote inteiro para o meu cabelo, para pintar só as pontas descoloradas no tom 8. Acontece que nem ficou o roxo que promete e na primeira lavagem ficou azul acizentado."
— Nicole (2/5)
"I tried to do purple & pink ombré and the pink worked just fine but the purple did not work AT ALL. I used purple clenditioner on my roots one time & it stuck better than this. I think the pink I used was pink warrior"
— M. G. (1/5)
"Great stuff."
— Elvia A. (5/5)
"I am too afraid to use this because the amethyst conditioner I bought faded to pink. This is a WARM color that fades to the red spectrum, NOT BLUE OR COOL TONED like all other purple hair products. My typically cool-toned blonde hair has faded to strawberry blonde because of this unexpected formulation. For those that hate when your blonde hair is a warm tone, like me, avoid avoid avoid!"
— Karyn B. (2/5)
"I had a really good experience with it even when having pink/red hair under it. Ive always had a good experience with manic panic."
— rylee w. (5/5)
"I honestly would barely give it one star it was just not at all what i was expecting and definitely not what i was hoping for. ."
— AshLee W. (1/5)
"Beautiful and bright. I only used once. Im greying so did not bleach my air. It lasted about 2 weeks."
— Katherine M. (5/5)
"When I had pure white hair and was ready to change it up, I bought this shade on a whim. It's the only color I have ever used by MP that did NOT take to my hair at all. I don't know if I just got a bad batch or what, but this should be marketed as a hair tint, if even that. Again I put this on pure platinum white hair. And it rinsed right out, didn't even stain. I've used other shades, including other purples, by MP and always loved the results. I don't know why this one was such a miss. I wanted to leave this here so others know: You're better off using ANY of the other shades of purple!"
— Ross (1/5)
"It was a lost for my money, because i did every step and dlthe color just didnt stay, im not saying after some washes i mean literally aplyed and it did not stay"
— Leny (1/5)
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