How to Darken Eye Brows in Photoshop CS5
To darken eye brows in Photoshop CS5, Create new adjusment layer.
and click on curves.
Set blend mode to Multiply.
Now it looks like this.
Now invert the selection by pressing Ctrl + I or Cmd + I, now it looks like this.
Now grab the brush tool.
color set to white.
brush size set to 20px and hardness set to 0% and paint on eye brow.
Here is the final image of eye brow now eye brows looks perfect.