Always do research before fucking with your hair 😩 Red is notorious for staining and even after bleaching can be close to impossible to lift 100% especially in one session. As far as black box dye. It fucked. I've been dying my hair black for 10 years with box black. Tried bleaching a few pieces a few years back, got a copper color and no color would stick to it. Still I continue to use box black 😂