First, you must accept a fundamental truth: your hair is a liar. It will pretend to be dark, but it’s secretly holding a grudge. Black hair is packed with eumelanin, the pigment equivalent of a security guard that refuses to let any new color in. Red dye, on the other hand, is the smallest, most slippery pigment molecule. It’s like trying to trap a hyperactive goldfish in a dark, crowded room.
If you just slap a box of "Fiery Ruby" on your virgin black hair, you will not get red. You will get a faint, angry brownish tint that looks like you’ve been stranded on a dusty planet for a week. The results are what we call "the disappointed auburn." Not a good look. Trust me, I’ve been there. I looked like a rusted-out muffler.
