Lime Crime Unicorn Hair Dye Review: Shortcut to Mermaid Locks

unicorn hair dye review

This post was most recently updated on June 11th, 2023

Whether you’re naturally blonde or brunette, at some point you may want to commit to trendy rainbow hues. Lime Crime might be an option to get those coveted mermaid locks. Read this Lime Crime Unicorn hair dye review to learn more about their products.

Unicorn Hair Dye Review - Picture of Five Dyes

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We’re going to take a look at the brand, their best hair dyes, ingredient breakdown, real-life user experiences (with pictures), and more.

Lime Crime Unicorn: Exclusive Delivery of Colorful Cosmetics Since 2008

The cult-favorite colorful cosmetics brand, Lime Crime, was founded by Doe Deere who initially launched the brand as a handmade fashion line that was sold on eBay back in 2004.

Her interest in bright colors made her realize a gap in the cosmetic market: a lack of products available in pastel colors which then led her to start making them in 2008. Since then Lime Crime has offered dozens of beauty products for makeup and hair.

picture of lime crime unicorn hair dyes

CEO Andrea Blieden continues Lime Crime’s legacy of making the products more accessible than ever by decreasing the prices by 20-50%. Lime Crime also uses eco-friendly packaging like PCR plastic and FSC-certified paper.

As Lime Crime’s best-seller, the Unicorn Hair collection is crafted with high-quality, globally-sourced ingredients for its best performance and strong color payoff. Plus, they’re all 100% vegan and certified by Leaping Bunny and PETA.

Let’s take a closer look at the Unicorn Hair Dye collection in the next section.

The Rainbow-Inspired Lime Crime Unicorn Semi-Permanent Color Collection

When it comes to picking Unicorn Hair Dye, there are two lines to choose from: Bolder hues or muted colors. Both are semi-permanent and won’t chemically break your hair cuticles to trap the pigments in the cortex.

Instead, Unicorn Hair Dye is an ultra-conditioning, DIY-friendly formula that deposits color onto your strands which will gradually wash out over time. The dye has a thick, super vibrant texture that is infused with a sugary citrus vanilla scent.

A little goes a long way, especially if you have straight, fine, and wavy hair. But people with thick, coarse, curly, and coily hair may need a little effort to apply the dye evenly. Additionally, it is ready to use right out of the jar. Just put on the gloves and you’re ready to go.

Next, we take a look at the formula.

Unicorn Hair Full Coverage

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If you dig the bolder shades, Lime Crime Unicorn Hair Full Coverage offers 30 rainbow-inspired hues you can try. They are suitable for light brown to platinum hair, but of course, the distinction in the results will be very subtle.

The shades of Unicorn Hair Full Coverage

If you have light blonde or platinum hair, you’ll get the most saturated and vibrant color in the final look. Meanwhile, folks with brunette hair may only get a subtle tint that is visible under light. Unicorn Hair Full Coverage is infused with fatty acids and vitamins to help moisturize your hair and boost shine.

Close to other hair dyes, darker or very dark hair will need to lighten the hair first for full vibrant color. It might sound scary, but Unicorn Hair bleach at-home lightening kits can be a great option as it’s infused with aloe vera to provide moisture and minimize damage.

What Customers Loved: “This product has great coverage for brown hair! I won’t bleach my hair but wanted to add a pop of color. I used Sea Witch which came out more of an emerald green on my hair color, and I love how it turned out!”
What Customers Did Not Like: “This dye worked very well. Unfortunately, it stained my sink, shower, hands, and pillowcase. And it feels like when it isn’t staining everything I own, it runs. Because I have curly hair, I twist and fluff it every day. This color is still running, therefore staining my hands.”

Unicorn Hair Tints

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If you’re dreaming of all things soft, pastels like mint matcha or pink candy just may be your go-to color. Infused with fatty acids + vitamins, Unicorn Hair Tint provides 16 subtle pastel colors that are best suited for naturally light blonde or pre-lightened hair.

The shades of Unicorn Hair Tint

If you feel you didn’t get the perfect muted shades, you can mix Unicorn Hair Full Coverage with Unicorn Hair Mixers to create your customized pastel shades. In fact, there’s no limit to combining pastel shades to get a brighter hue.

Remember, Unicorn Hair Tint is meant to be used on pale blonde or platinum hair. Whether you like it or not, brunettes will have to bleach prior to using the dyes. Check the color swatch below to see how each shade comes out on different hair color bases.

What Customers Loved: “This is a tint and not going to be a deep color. It’s really only going to work well on platinum hair, otherwise, some colors will look weird or not even show up at all. I use tints because they don’t stain my hair, and I can change the color often without bleach washing.”
What Customers Did Not Like: “I had seen all of the bad reviews mentioning people’s hair turning green. I figured it was because those users had yellowish hair and the blue undertones of Gargoyle (Stone Grey) made it green. Fades extremely quickly, compared to other products with the same or similar color.”

Next, let’s check out the Lime Crime Unicorn Hair Dye ingredients.

Unicorn Hair Dye Ingredient Breakdown

Lime Crime Unicorn Hair Dye is formulated with no animal-derived ingredients, such as beeswax, lanolin, whey, or carmine. It’s free of PPD, ammonia, and peroxide. Below is the full list of Unicorn Hair Dye.

Water, Cetyl Alcohol, Glycerin, Stearalkonium Chloride, Glyceryl Stearate, PEG-100 Stearate, Propylene Glycol, Guar Hydroxypropyltrimonium Chloride, Hydrolyzed Adansonia Digitata Seed Extract, Quaternium-75, Cetearyl Alcohol, Ceteareth-20, Tetrasodium EDTA, Citric Acid, Fragrance, Methylchloroisothiazolinone, Methylisothiazolinone, Basic Yellow 40, and HC Blue 15.

Now let’s find out what they do individually for your hair.

Cetyl Alcohol and Cetearyl Alcohol

Both are fatty alcohols that act as an emollient to stabilize liquid and oil, so the formula applies well to your hair. Cetyl and Cetearyl Alcohol also play a major role to increase hair softness and reduce tangles.


Glycerin acts as a solvent and humectant to help carry the pigments into your hair. Plus, it helps build viscosity due to its ability to attract water. As a humectant, glycerin is also beneficial to hydrating your hair and promoting hair smoothness.

Guar Hydroxypropyltrimonium Chloride

It is a water-soluble, organic compound derived from the cluster bean plant. This ingredient acts as an anti-static agent to prevent tangles and flyaways. Guar Hydroxypropyltrimonium Chloride also helps condition and moisturize your hair, delivering a silky-smooth finish.

Hydrolyzed Adansonia Digitata Seed Extract

It is a water-soluble ingredient derived from the baobab tree that grows in southern countries of Africa. Adansonia Digitata Seed is rich in omega-3 fatty acids which help moisturize dry hair and strengthen weak hair.

These are the standout ingredients of Unicorn Hair Dye and their benefits for your hair. Now, let’s take a look at the results after using Lime Crime Unicorn Hair Dye.

Unicorn Hair Full Coverage Reviews

Currently, Unicorn Hair Full Coverage sits at 4.4 out of 5 stars from 11,941+ global ratings. Here’s the rating by feature:

  • Easy to use: 4.6 stars
  • Scent: 4.5 stars
  • Softness: 4.5 stars
  • Value for money: 3.8 stars
  • Longevity: 3.7 stars
  • Flavor: 2.6 stars

Now let’s check the reviews one by one.

Results of a brunette woman with short hair after using Sea Witch

unicorn hair dye review - Unicorn Hair Full Coverage - 1
First Picture – Initial result of the Sea Witch shade on her unbleached ends. It turned her hair deep green after leaving for about 1.5 hours and using about 1/4 of the bottle.
Second Picture – Her hair turned dirty blonde after bleaching. She used the Pony shade at the ends and for highlights and left it for about 30 minutes.
Third Picture – Results of the Sea Witch shade on bleached hair after using a little over half the bottle and leaving it on for 1.5 hours. The color looks so vibrant.
Forth Picture – The color started fading after two weeks (or three washes).

Results of a blonde woman with short, pre-lightened hair after using Bubblegum Pink

unicorn hair dye review - Unicorn Hair Full Coverage - 2
The results came out too pink after leaving it for 2 hours. But, after 4 washes she got the light pink she wanted. The scent is pleasant, but it stains everywhere. She didn’t notice any frizzy or damaged hair after application.

Results of a woman with Afro-American, pre-lightened hair after using Neon Peach

unicorn hair dye review - Unicorn Hair Full Coverage - 3
First Picture – Results after mixing Neon Peach and Strawberry Jam and leaving for several hours. It turned her hair into a deep red finish.
Second Picture – Results of Neon Peach on her dirty blonde hair after leaving the dye for 6 hours (overnight). The color came out very bright. The water ran clear so quickly, meaning more color is deposited so less dye to waste down the sink.

Results of a woman blonde woman with short, straight hair after using Anime

unicorn hair dye review - Unicorn Hair Full Coverage - 4
Overall, the smell was fantastic and easy to apply. After an hour of setting, her hair turned to deep teal, and it’s very pigmented and deposits well. The color started fading into lighter teal after 11 days apart (3 washes), but it did not damage the hair at all.

Results of a woman with long, silver hair after using Charcoal

unicorn hair dye review - Unicorn Hair Full Coverage - 5
The dye was easy to apply, but the smell was like the 90’s fragrance. It didn’t stain anything like Manic Panic. The color almost covered all of the silver and made her hair turn into something resembling highlights.

Unicorn Hair Tints Reviews

Meanwhile, Unicorn Hair Tint has 3.6 out of 5 stars from 1,775+ global ratings on Amazon. Here’s the rating by feature:

  • Scent: 3.9 stars
  • Easy to use: 3.8 stars
  • Accuracy: 2.3 stars
  • Value for money: 2.2 stars
  • Longevity: 2.1 stars

Now let’s take a look at the reviews.

Results of a woman with damaged, over-processed hair after using Cloud

unicorn hair dye review - Unicorn Hair Tint - 1
The dye turned her platinum hair into a periwinkle color with perfect coverage. The dye also didn’t jeopardize her curls or damage her hair.

Results of a woman with wavy, platinum-dyed hair after using Cloud

unicorn hair dye review - Unicorn Hair Tint - 2
She got perfect periwinkle right on the platinum part, except the ends which were not completely platinum and turned grayish. She used 2 jars for the length of her hair and left the dye for 2 hours. It was also gentle, easy to use, and smelled good.

Results of a woman with short, pre-lightened hair after using Gargoyle

unicorn hair dye review - Unicorn Hair Tint - 3
After using half of the jar and sitting with the color for 1 hour and 15 minutes, her hair turned dark with a few gray highlights. There were also green hints on the bleached part, it was not very subtle.

Results of a woman with wavy, pre-lightened hair after using Bunny

unicorn hair dye review - Unicorn Hair Tint - 5
Her hair color turned very light, muted pink after using Unicorn Hair Tints mixed with the conditioner.

These are the results of Lime Crime Unicorn Hair Dye on different hair types, hair textures, and time results. Now, let’s take a look at the disadvantages and possible side effects of Unicorn Hair Dye.

Disadvantages and Possible Side Effects

Based on real-life user reviews, there’s only a small number of people who experienced side effects, such as rashes, burning, and hair dryness. In this section, we cover the disadvantages and possible side effects that may occur.

  • Some people with blonde hair noticed their hair color turned green after using the Charcoal shade. It is recommended to tone your hair prior to using the Charcoal or Gargoyle shades to remove yellow undertones. You can fix it with simple home remedies, such as ketchup/ tomato sauce, baking soda, or a clarifying shampoo.
  • The dye has a super pigmented color and will stain everywhere, such as the floor, sink, and your hands. Make sure to cover the surface with plastic wrap, put on an old cloth, and wear gloves even during rinsing the color.
  • If you are allergic to fragrance, you may experience allergic reactions, such as rash or swelling. Kindly perform a patch test to prevent these issues from happening.
  • Unicorn Hair Dye contains Methylchloroisothiazolinone and Methylisothiazolinone that may cause skin or scalp irritations, such as itching, redness, and burning. Always wear gloves and if you notice such issues, you can use home remedies like aloe vera or cool compress to soothe and calm the irritations.
  • Some people reported the color fades pretty fast, especially the pastel shades. Kindly take proper color treatment like washing less often and using color protection shampoo.

Although Unicorn Hair Dye is free of harsh chemicals, it is advised to always do a patch test 48 hours before application to check if you have allergies. Plus, kindly use the dye on clean, well-conditioned hair to prevent hair dryness, especially if you have brittle and fragile hair.

Next, let’s check out similar semi-permanent hair dyes.

Alternatives to Lime Crime Unicorn Hair Dye

When it comes to semi-permanent conditioning hair dyes, you’ve always got options. Here we provide 3 alternatives to Lime Crime Unicorn you may want to try.

Manic Panic Classic High Voltage

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This NYLON Magazine® Beauty-winning semi-permanent dye comes in up to 65 hues, which is more varied than Lime Crime. The formula is vegan-friendly and best suited for those with pre-lightened hair. The color lasts for 4-5 weeks depending on how much you wash your hair.

You can get Manic Panic Classic High Voltage now on Amazon for only $14.99 (4 fl oz). The price is not much different from Lime Crime, but Lime Crime has a more generous size.

Punky Colour Conditioning Hair Color

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Available in 23 shades, Punky Colour Semi-Permanent is infused with vegan keratin complex to help promote soft, shiny hair and long-lasting color. Punky Color is best suited for blonde hair, darker hair might only show up as a subtle tint. It lasts for 5-40 washes depending upon hair porosity and type.

A pack of Punky Colour Hair Dye costs you only $6.88 for 3.5 fl oz, which is more affordable than Lime Crime and Manic Panic.

Celeb Luxury Color Depositing Shampoo

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If you prefer a color-depositing shampoo, look no further than Celeb Luxury which is available in 12 shades. This vegan semi-permanent color shampoo is best suited with blonde and brown with highlights. It is formulated with Bond Builder to help hydrate and strengthen your hair.

When it comes to pricing, it is much more expensive than Lime Crime. It costs you $35 for 8.25 fl oz.

Bottom Line: Colorful Non-Committal Hair Dyes

The Unicorn Hair Dye collection offers plenty of bright colors both bold and muted shades. The formula is super-pigmented and won’t damage your hair as it’s packed with hair conditioners. However, the color fades pretty fast based on multiple reports. Make sure to well-care the color for long-lasting vibrates.

If you’re ready to make a purchase, click here to grab the hair dyes and see the results for yourself. Leave us comments in the comment section.

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Frequently Asked Questions

How long does Lime Crime Unicorn Hair last?

Lime Crime Unicorn Hair Dyes gradually fade lighter depending on how much you wash your hair, your hair porosity, and your hair type. Based on real-life user reviews, the color usually started fading after 3-5 washes.

Is Lime Crime Unicorn Hair damaging?

Lime Crime Unicorn doesn’t contain any harsh chemicals or bleaching agents that can damage your hair. If you have brittle and fragile hair, make sure to take good preparation before dyeing your hair to minimize the damage.

Is Lime Crime Unicorn Hair pet-safe?

Although it’s vegan, Lime Crime Unicorn is not certified pet-safe. It is advised to not apply the dyes on your pet to prevent any adverse effects that may occur. Pets usually lick their fur when anything foreign comes in contact with them.

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