To start importing the image you want in this tutorial I use that one big downloadable format here


Take one of your tools of conventional breeding and select the character's head personally I used the magic wand tool (w) like this

Now click Improve contours below the Menu Bar or go to Menu> Select> Improving contour


Do not leave the previous window you will notice when you hover your mouse over the image the cursor shape changes is just better tool radius (E) and to have a perfect selection of hair you need to use it on all the edges of the selection do not hesitate to do it again 2 or 3 times on the same area.
you can choose the display mode


click OK, and then made ​​a copy and paste your selection

And here is a great selection and perfect all thanks to new features in Photoshop CS5