If you're a fan of Manic Panic, then you'll love their Electric Sky Blue UV hair dye. This semi-permanent hair dye glows under blacklight and lasts for 4-6 weeks. The formula is vegan and cruelty-free, making it a great option for those looking for a more sustainable hair dye. The Electric Sky Blue shade is a bright and bold blue that will make you stand out in a crowd. Plus, with its conditioning formula, your hair will feel soft and nourished after coloring.1. Manic Panic Electric Sky Blue UV Hair Dye
Arctic Fox is known for its vibrant and long-lasting hair dyes, and their Blue Jean Baby shade is no exception. This semi-permanent hair dye is UV reactive and can last up to 8 weeks. The formula is free of harsh chemicals and is also vegan and cruelty-free. With its bright and bold blue shade, your hair will be the talk of the town. And with each purchase, Arctic Fox donates 15% of profits to animal charities, so you can feel good about your purchase.2. Arctic Fox Semi-Permanent UV Hair Dye in Blue Jean Baby
Get ready for some serious color with Special Effects Blue Mayhem UV hair dye. This semi-permanent hair dye is known for its intense and long-lasting color. The formula is vegan and cruelty-free, making it a great option for those with sensitive scalps. The Blue Mayhem shade is a bright and vibrant blue that will glow under blacklight. So, if you want to make a statement with your hair, this is the dye for you.3. Special Effects Blue Mayhem UV Hair Dye
If you're looking for a permanent UV reactive blue hair dye, then Pravana ChromaSilk Vivids Neon Blue is a great option. This professional-grade hair dye is known for its vibrant and long-lasting color. The formula is cruelty-free and contains nourishing ingredients like keratin and silk amino acids to keep your hair healthy and shiny. The Neon Blue shade is a bright and intense blue that will glow under blacklight and will last for weeks.4. Pravana ChromaSilk Vivids Neon Blue Hair Dye
For a more muted but still UV reactive blue hair color, check out Joico Color Intensity Semi-Permanent Hair Color in Cobalt Blue. This professional-grade hair dye is known for its vibrant and long-lasting color. The formula is free of harsh chemicals and is vegan and cruelty-free. The Cobalt Blue shade is a deep and rich blue that will show up under blacklight and can last for up to 15 washes.5. Joico Color Intensity Semi-Permanent Hair Color in Cobalt Blue
Splat is a popular brand for bold and bright hair dyes, and their Midnight Indigo shade is no exception. This semi-permanent hair dye is known for its intense and vibrant color that can last up to 30 washes. The formula is vegan and cruelty-free, making it a great option for those with sensitive scalps. The Indigo shade is a deep and rich blue that will show up under blacklight and will give you a bold and unique look.6. Splat Midnight Indigo Hair Dye
Good Dye Young is a brand founded by rockstar Hayley Williams, and their Blue Ruin shade is the perfect option for those wanting a UV reactive blue hair color. This semi-permanent hair dye is vegan and cruelty-free and can last up to 6 weeks. The Blue Ruin shade is a bright and bold blue that will glow under blacklight and will give you a unique and eye-catching look.7. Good Dye Young Semi-Permanent Hair Color in Blue Ruin
For a more budget-friendly option, check out La Riche Directions UV Semi-Permanent Hair Dye in Lagoon Blue. This vegan and cruelty-free hair dye is known for its vibrant and long-lasting color. The Lagoon Blue shade is a bright and bold blue that will stand out under blacklight. And with its conditioning formula, your hair will feel soft and nourished after coloring.8. La Riche Directions UV Semi-Permanent Hair Dye in Lagoon Blue
Stargazer is a well-known brand for bold and bright hair dyes, and their UV Semi-Permanent Hair Dye in Blue is no exception. This semi-permanent hair dye is vegan and cruelty-free and can last up to 6 weeks. The Blue shade is a bright and vibrant blue that will glow under blacklight and will give you a unique and head-turning look.9. Stargazer UV Semi-Permanent Hair Dye in Blue
For a twist on traditional blue hair, check out Manic Panic's Amplified Semi-Permanent Hair Color in Atomic Turquoise. This vegan and cruelty-free hair dye is known for its vibrant and long-lasting color. The Atomic Turquoise shade is a bright and bold blue-green that will stand out under blacklight and give your hair a unique and eye-catching look. With these top 10 UV reactive hair dye blue options, you can achieve vibrant and bold hair that will stand out under blacklight. Whether you prefer a more muted or intense shade, there is a UV reactive blue hair dye for everyone. So, go ahead and add some color to your life with these amazing hair dyes!10. Manic Panic Amplified Semi-Permanent Hair Color in Atomic Turquoise