Very simple CS2 - 6/CC/PSE Gimp Brush that creates light effects with a brush! All you do is choose the light in your brush panel, and click anywhere in the photo! Yes it is that easy, really.

This set includes43 Light Hack Brushes

All Brushes work with Photoshop - Photoshop Elements  

Photoshop/Photoshop Brushes for Professional or Beginner Photographers