How Long Do I Leave Semi Permanent Hair Color In
Here’s the liberating truth: semi-permanent color wants to leave. It’s not a tattoo. It’s a temporary fling.
Leave it on for 10 minutes and you get a pastel tint that’s gone in three shampoos. Leave it on for 45 minutes and you get a bold statement that lasts eight washes. Both are valid. Both are fun.
The only real sin? Leaving it on for 2 hours. I did that once with a purple dye. My hair looked like a grape that got electrocuted. And it still wasn’t damaged—just very, very grapey.
What About Dry vs. Wet Hair?
Dry hair is an eager beaver. It soaks up color in minutes. Wet hair is shy—it pushes color away. Always apply to dry, unwashed hair for best results.
Unless you’re using a pastel tint. Then wet hair gives you that “barely there” ethereal glow. This is the “I woke up like this” of hair dye world.