Yes, the cut link says it all..britney shaved her head..for more info.. click Here

On with the tutorial:

1. Duplicate your base..set it to overlay.
2. Make a new selective color layer. Set your adjustments:

Reds:
0
-27
-37
0
Yellows:
0
0
-38
0
Blues:
0
+5
0
0
Whites:
0
0
+100
0

Press Ok. Done! Add brushes, text etc..

I'd love to see your results!