Lime Crime Full Coverage Unicorn Hair Dye, Dirty Mermaid - Damage-Free Semi-Permanent Hair Color Conditions & Moisturizes - Temporary Hair Tint Kit Has A Sugary Citrus Vanilla Scent - Vegan
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Availability:
In Stock.
Arrives
Tuesday, May 19
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Color: Dirty Mermaid (Seafoam Green)
Features
- Dirty Mermaid Unicorn Hair Dye: Dyed and gone to Unicorn Heaven! Lime Crime Unicorn Hair is a DIY-friendly, semi-permanent color dye that transforms hair into vibrant colors... all from the comfort of your own home. Dirty Mermaid is a stunning seafoam green that will make your fantasy hair color dreams come true, and its sugary citrus vanilla scent will make your transformation even sweeter!
- Why You Need It: Not only does our damage-free, vegan hair dye give you fun, vibrant color, but this formula also contains conditioning ingredients like fatty acids and vitamins that help to moisturize your hair and boost shine.
- Before You Use It: Unicorn Hair deposits super-saturated, vibrant color to pre-lightened platinum to medium blonde hair and adds a tint of color to dark blonde and light brown hair. The life cycle of the color depends on the shade and condition of your hair and how often you wash it. Always do a patch and strand test before coloring your full head because results may vary.
- Benefits: This formula is free of harsh chemicals like PPD, Peroxide and Ammonia. Lime Crime is certified by both Leaping Bunny and PETA, and we design, manufacture, and assemble quality products using globally sourced ingredients for high performance wear and strong color pay-off.
- Never Blend In: Lime Crime is a Vegan & Cruelty-Free makeup and hair brand that aims to inspire and invites self-expression. Through our vibrant color products, we encourage all to explore their individuality, embrace their uniqueness and always stand out from the crowd. Find joy through color and re-imagine your boundaries with Lime Crime.
Is Discontinued By Manufacturer : No
Product Dimensions : 2.5 x 2.5 x 3.75 inches; 0.09 ounces
Item model number : L001-84-0001
UPC :
Manufacturer : Lime Crime
Best Sellers Rank: #3,630 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #58 in Hair Color
#58 in Hair Color:
Customer Reviews: 4.4 4.4 out of 5 stars (13,253)
Color: Dirty Mermaid (Seafoam Green)
Container Type: Jar
Product Benefits: Moisturizing
Brand Name: Lime Crime
Item Form: Paste
Hair Type: All
Number of Items: 1
Manufacturer: Lime Crime
UPC: 816652027230 816652020378
Recommended Uses For Product: Hair coloring at home for pre-lightened platinum to medium blonde hair, and adding a tint to dark blonde and light brown hair
Model Number: L001-84-0001
Manufacturer Part Number: L001-84-0001
Item Weight: 0.56 Hundredths Pounds
Material Features: Cruelty Free
Material Type Free: Paraben Free,Sulfate Free,Ammonia Free
Hair Color Permanence: Semi-Permanent
Unit Count: 6.76 Fluid Ounces
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, May 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Genie (Deep Violet Purple)
I have been using Lime Crime Unicorn Hair for over 3 years now and it has never disappointed me. The Chocolate Cherry shade is such a beautiful color that looks vibrant and rich right after coloring. The color payoff is excellent and it always leaves my hair looking bold and shiny. I’ve also tried Genie, Sea Witch, and Valentine, and every shade has turned out stunning. One of my favorite things about this dye is the scent. The sugary citrus vanilla fragrance makes the application process so much more enjoyable. It doesn’t smell harsh like other dyes, which matches perfectly with how gentle it is on my hair. After rinsing, my hair always feels soft and conditioned rather than dry or damaged, and I’ve never experienced breakage from using it. The dye is very easy to apply at home, whether with a brush or just gloved hands, and it washes out of my shower without leaving any stains. The color is long-lasting too. I usually go about 2 months before I need to redye, and even then it fades gradually into a softer version of the shade instead of looking patchy. Overall, this is hands-down the best semi-permanent dye I’ve ever used. The colors are vibrant, the scent is amazing, it’s easy to use, and it always leaves my hair in great condition. Absolutely worth the money for the quality and results. If I could rate it higher than 5 stars, I would.
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Reviewed in the United States on September 2, 2025 by Christina
Color: Sea Witch (Rich Teal)
Been using this hair dye for 5 years now, unfortunately out of stock on website so I ordered it here and had just as good experience. This will low-key stain your hair but I've been doing the same colour and don't plan on changing it so I prefer that way, lasts a good 3 months before fading, covers medium//chocolate brown hair without bleach but comes out brighter if you add highlights or something before. Smells super good too
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Reviewed in the United States on April 27, 2026 by Whalen
Color: Neon Peach
Disclaimer: we mixed this one with a different orange dye to create a different color! Actually bought this for myself to try but my son ended up using some too lol it smells amazing and was easy to apply! I feel like a little went a long way. I used most of it on my hair, which was dyed pink. I mixed with another color called tangerine dream from a different brand to create a “neon tangerine” vibe and threw it on my pink hair. The results were really good 🥹 the neon peach shines through on its own and my kids said it was “glowing” in the sun lol. It didn’t rinse fully clear but it didn’t stain anything and hasn’t bled at all. Not sure about longevity yet but I’m always switching colors anyway so I appreciate this one for being so vibrant and taking so well to my natural red hair/pre-dyed hair! Including a pic of my hair just before I did the neon peach/tangerine. It was electric paradise pink mixed with a little leftover pink splat 😅
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Reviewed in the United States on January 6, 2026 by Kaila Ward
Color: Pony (Violet Purple)
LimeCrime Unicorn Hair dye promises “ALWAYS VIBRANT, NEVER DULL. This semi-permanent hair dye washes out gracefully from poppin’ to pastel, and always stays looking fierce. With no toner or developer needed, your hair will stay healthy and bright!” and it is quite true, if applied and taken care of properly. I have used a bunch of different hair dyes and have dyed my hair at least 4 different colors and throughout some trial and error I have found that LimeCrime works the best. When I first dyed my hair I went to a salon, I got it bleached and dyed it blue, two days later the dye washed out and my hair looked dingy, considering I spent over $100 on that I was very unhappy. Since then I decided that I would color my own my hair, I bought manic panic and I had to redeye my hair every 3rd wash. I was unhappy with that as well and decided it was time to search for a new dye for my hair. While searching and searching I came across LimeCrime Unicorn Hair, it sounded good and the bottles looked decently sized, so I decided to give it a try. The first color I bought was pony purple, it was supposed to be a bright violet color, it looked pretty on the model’s hair, so I ordered it and gave it a go. When it came I was really impressed, one bottle of LimeCrime Unicorn Hair is like two bottles of manic panic. When I opened the bottle I was impressed by how good it smelled, it had a really sweet aroma to it and I thought “oh the dye just smells good it’s probably to cover the smell of chemicals”, no I was wrong, the dye has almost no actual chemicals in it, there is nothing in the dye that could possibly harm your hair. So, the first time I applied the pony color to my hair I didn’t apply it correctly, what you have to do is rub it into your hair, the dye not only colors your hair but it also works as a kind of deep conditioner. When applying put a little on the tip of your dying brush, depending on how long your hair is and how thick it is this will vary, and apply it to your hair, after applying it with the brush make sure you rub it into to every strand you just applied it to. This will help the color take better to your hair and it will also make the dye work as a kind of deep conditioner. After using this dye 3-5 times, I can say that the color really does come out vibrant and it stays in for a long time, just wash your hair with luke warm or cold water, not hot, it makes the dye was out much faster. All in all LimeCrime really does come through on their promise for vibrant hair that lasts long and fades well, some reviews have been negative, but I disagree, much like Brianna Martinez says, “I was nervous after I ordered after reading some of the other reviews, but I love this product.” This product is quality and I highly recommend buying it if you want bright, vibrant, and soft hair.
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Reviewed in the United States on August 16, 2018 by KaylaH
Color: Chocolate Cherry (Burgundy Red)
I dont usually leave reviews, but im hoping this will help someone else not savy.... My daughter's and I have all dark brown hair. We went to a K Pop dance party and wanted to make it super special to dye their hair, better than halloween one day spray. So I tried this. It is amazing. So easy. So beautiful. The chocolate cherry or whatever it is showed up absolutely beautifully on dark hair. Its a red/pruple/pink combo on very dark hair. We only did the tips/lower half of our hair. But it came out so pretty and actually showed up on dark hair without any pretreat or extra steps. Literally just apply, wait, wash. As for longevity, I can update this review with how long it lasts.
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Reviewed in the United States on April 20, 2026 by Larissa
Color: Anime (Candy Blue)
unfortunately the candy blue turned my hair more green than blue. my hair was light blue to begin with and I wanted a small refresh. but the end result is more of turquoise / aqua. I washed it off immediately without leaving in for long. disappointed because I know this will fade to a green since the green pigments are much stronger than the blues. it would make sense if my hair was yellow to begin with but it was a very nice blue. this may take lots of color correcting to get back to a light blue hair color.
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Reviewed in the United States on April 11, 2026 by Emmi Xi