How do you put caramel streaks in black hair?

You bleach the portions you wish to dye, then blow dry the bleached sections and dye them caramel.

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If the hair is naturally black, I would highlight the hair with bleach mixed with 10 or 15 volume developer. More than likely, the highlights will come out caramel by themselves. If not, I would use a quick toner to get the desired results.