hair selection

Hi all,

I am using the hair system and I use it for a sphere (my toon head).
The problem is that the hair take all the sphere.
I would like the hair appears only on the top of the head and the sides (like a haircut).

Thanks for your responses,

A+

Add the hair to a proxy object that is the shape of the area you want the hair to be instead of the whole head
or
Use vertex groups / weights to control the hair density (Vertex Groups panel in the particle settings)
or
Use a image texture to control density of the hair (add particle system and then you can add a particle texture in the texture settings, set influence to length or density etc)