Here's a breakdown:
You likely need to bleach if:
* Your hair is dark: Darker hair has more melanin, which makes it harder for dye to penetrate. Bleaching lightens your hair, allowing the pink dye to show up vibrant and true.
* You want a bright, neon pink: These shades require a very light base (almost white) for optimal results.
You might not need to bleach if:
* Your hair is already light: If your hair is blonde or very light brown, you might be able to get a pale pink with direct dye without bleaching.
* You want a subtle pink: Using a semi-permanent or temporary pink dye on light hair might give you a soft, pastel pink without needing to bleach.
Important Considerations:
* Damage: Bleaching can damage your hair. If you're unsure, consult a professional hairstylist.
* Color: The shade of pink you want will influence how light your hair needs to be.
Pro Tip: If you're unsure, test a small strand of your hair with the pink dye. This will give you a better idea of how it will look on your hair and if you need to bleach.