MANIC PANIC neon blue-green semi-permanent hair color — Siren's Song 4 oz, vibrant mixable, ammonia-free

MANIC PANIC Classic Siren's Song is a neon blue-green semi-permanent hair color that delivers vivid, mixable pigment lasting about 4–6 weeks without using peroxide or ammonia.

For anyone who wants a high-impact, temporary transformation, Siren's Song provides an electric blue-green tone in a conditioning, resealable 4 oz tub. This formula is made to layer over pre-lightened hair for the brightest results, but it can also enrich darker shades for subtle teal or jewel-toned effects. Because it’s vegan, cruelty-free, and free of ammonia and PPD, it’s an option for creative styling without permanent commitment.

How bright will Siren's Song look on my hair?

Color payoff depends on how light your base is. The brightest neon blue-green appears on hair lifted to level 9–10 blonde; on darker bases the dye deposits deeper teal, blue-green tones rather than neon.

• Best: level 9–10 pre-lightened hair yields electric neon intensity.
• Medium: light brown produces jewel-toned teal shades.
• Dark: brown to black accepts tinting for subtle blue-green highlights.
• Tip: use MANIC PANIC Flash Lightning Bleach Kit for the optimal base.

Can I mix Siren's Song with other colors or pastelize it?

Yes — the Classic formula is designed for blending. Mix with other MANIC PANIC shades to create custom hues, or dilute with the Pastel-izer to soften the neon into trendy pastels without compromising conditioning benefits.

• Create unique tones by combining two or more Classic colors in small test batches.
• Use Pastel-izer to lighten saturation and achieve muted or pastel teal shades.
• Mixing ratios let you control vibrancy and longevity for tailored results.

How long will the color last and how should I maintain it?

Siren's Song typically lasts 4–6 weeks, fading gradually with each wash. To preserve vibrancy, wash hair with cool water, use sulfate-free shampoo, and limit heat styling; occasional color-depositing conditioners can refresh tone between applications.

• Lasts approximately 4–6 weeks depending on hair porosity and care routine.
• Cold water and gentle (sulfate-free) cleansers slow fade.
• Touch-ups or reapplications revive vibrancy when desired.
• Store the resealable tub away from direct sunlight for best shelf life.

Is this safe for my hair and what are the key ingredients/features?

The Classic formula conditions while depositing color — it’s free of ammonia, PPD, gluten, and phthalates. Manic Panic emphasizes vegan and cruelty-free production; the formula is formulated to be gentle compared with permanent dyes because no developer is required.

• Vegan and PETA-accredited cruelty-free brand standards.
• No ammonia, no PPD — designed as a semi-permanent alternative.
• Conditioning agents help leave hair soft and hydrated after use.
• Resealable 4 oz tub supports multiple applications and mixing experiments.

Who is this for? Siren's Song is for creative stylists, DIY colorists, and anyone seeking temporary, high-impact blue-green hues without permanent commitment. It suits people who already lift hair to a light blonde or who want to tint darker hair for subtle color effects, and those who prioritize vegan and cruelty-free beauty products. If you enjoy mixing shades or experimenting with pastel and neon results, this tub is a versatile tool in your color kit.