I agree with Canlocu and I will even say that it would need to be turned down a bit more than that even, but if you are done with ENB's lighting (which would make you the first one to be, satisfied with a look that is) then it won't be a problem but consider how bright other objects are and how much they can be increased before they look as bright as your hair does in that image. It's easier to have a more general color intensity on most objects or at least on most of the the other common bright objects so you won't overblow it in the future when you might feel that brighter lighting is better or feels better.
And also I have yet to see anyone with such bright hair, even though my brother once had almost pure white hair he still didn't have such bright hair in a strong summers day with the sun shining on his hair
