Here's a more detailed breakdown:
* Light to Medium Brown Hair: You *might* see a slight tint of color, especially in sunlight. More vibrant and pigmented shades like blues, greens, and purples will likely be less noticeable. Deep reds and dark purples *might* give a subtle reddish/purplish hue in certain lights.
* Dark Brown to Black Hair: It's unlikely that Crazy Color will show up significantly on very dark brown or black hair without pre-lightening. You might see a very faint tint in direct sunlight with some of the darker shades.
To get vibrant, true-to-the-color results with Crazy Color on brown hair, you'll almost always need to bleach your hair first. The lighter the hair, the more vibrant the color will be.
Alternatives/Considerations:
* Hair Chalk/Wax/Spray: If you want a temporary pop of color without commitment, consider hair chalk, wax, or spray. These products wash out easily.
* Color Depositing Conditioners/Masks: Some color-depositing conditioners or masks are designed for brown hair and can add subtle tones. They might be a good option if you want a temporary, low-commitment change.
* Balayage/Highlights: Getting balayage or highlights on your brown hair and then applying Crazy Color to the lightened sections is a good way to get vibrant color without bleaching all of your hair.
In summary: Crazy Color *can* work on brown hair, but the results are usually very subtle unless the hair is pre-lightened. If you want vibrant, noticeable color, bleaching is necessary. If you're unsure, do a strand test first to see how the color will take to your hair.