Why Does My Hair Dye Wash Out Does Hair Dye Wash Out With Plain Water?

Does hair dye wash out with plain water? - why does my hair dye wash out

I just had her hair dyed professionally. If I do not use a bath / shower, and shampoo or my hair well? I just wanted to wash my face, and I take showers instead of washing laundry in the sink. However, I can wash my makeup in the bathroom - there is a risk that has washed my color.