Hi! I used clairol natural instincts nutmeg hair color to darken my med brown hair. This brand says it will wash out in 28 shampoos- longer if you're going to a darker color. Will it fade out eventually so I'm back to my old color? I like it now, but I don't want it that way forever. A month or two, but I'm seriously afraid of it never going away. Does anyone know if it will & approx how long it will take? Or if there's a shampoo that would speed it up if I need to? Thanks!

Prell shampoo will strip the color fast.Baking soda will help also.