Amanda Colgan Photography Frequency Separation Action is a must-have for your workflow!
Edit skin faster and more efficient with this Photoshop Action.
This is the exact action I made to use in my own workflow.

1 Total Action:
Frequency Separation Action
Instructions on how to Download,  Load into PS and Use this Action.
Video Tutorial of to use the Action in Photoshop. 
 
Some knowledge of Photoshop is recommended.
 
Due to the digital nature of this product, there aren't any refunds.