Manic Panic Bad Boy Blue Hair Dye - Semi-Permanent Hair Color for Women and Men

Manic Panic's Bad Boy Blue is the perfect denim blue hair dye, featuring green and grey undertones. For the best results, we recommend lightening your hair to a very light level 9 blonde or lighter, and toning any yellow tones before use to avoid undesired hues.

Our semi-permanent hair dyes are fortified with conditioning agents that add moisture to pre-lightened hair. They are ready-to-use and do not require a developer. The color will last 4-6 weeks on pre-lightened hair.

Manic Panic offers an extensive range of over 49 hair color shades, allowing you to mix and create custom tones. Combine any formula with our Mixer/Pastel-izer to achieve soft, on-trend pastel hues.

Our vegan, cruelty-free formula is free of harsh chemicals like PPD, ammonia, parabens, gluten, resorcinol, and phthalates. All Manic Panic hair colors are made in the USA.

To achieve the most vibrant results, we recommend pre-lightening your hair using our Flash Lightning or Blue Lightning bleach kits. These will lift your hair up to 5-7 levels, preparing it for the intense Manic Panic color.

For the full dyeing process, start by washing your hair with a deep cleansing shampoo (no conditioner). Blow-dry your hair thoroughly to ensure maximum porosity.

Apply the Manic Panic color using a tint brush, making sure to saturate your hair completely. Comb through to evenly distribute the color. Cover with a plastic cap and process for 30-45 minutes, adding heat for enhanced intensity.

Rinse with cool water until the water runs clear, then style as desired. Always ensure your hair is completely dry to prevent color transfer or bleeding.

Manic Panic offers a variety of supporting products to complement your hair color journey. Our Prepare to Dye Shampoo, Not Fade Away Shampoo, and Keep Color Alive Conditioner help extend the life of your vibrant hues.

The Dye Away Wipes gently remove any color from your skin, while the Hair Dye Tool Kit provides all the essentials you need. Finally, the Hair Freshener Powder offers a quick, fragrant dry shampoo solution.

Whether you're looking to achieve a bold statement color or a soft, pastel look, Manic Panic has the perfect semi-permanent hair dye for you. Enjoy guilt-free glamour with our vegan, cruelty-free formulas.

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