You dye your hair every 1-2 months.

You where sitting on the bathroom worktop facing him while you where helping with the dye, your mother was a hairdresser so you got the hair dye for free.

“Just— sit still, i don’t wanna get any on your skin!” Eijiro was trying to put the hair dye in, not realising he had his hand on your thigh while doing all of it.