Photoshop Tutorials: Colorful Light Burst Text
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Step 19: Apply The "Polar Coordinates" Filter Again
Go back up to the Filter menu again, choose Distort, and then choose Polar Coordinates. This time choose the Rectangular to Polar option and click OK:
Photoshop Tutorials: Apply "Polar Coordinates" again, this time choosing "Rectangular to Polar".
Your image should now look something like this:

Photoshop Tutorials: The image after applying the "Polar Coordinates" filter a second time.
Step 20: Set The Layer Blend Mode To "Screen"
Go up to the blend mode options in the top left of the Layers palette and change the blend mode of the text copy layer from "Normal" to Screen by clicking on the down-pointing arrow and selecting "Screen" from the list:

Photoshop Tutorials: Change the blend mode of the text copy layer to Screen.
This reveals the original text layer beneath it:

Photoshop Tutorials: The original text layer is now visible as well.