https://www.nbpretouchtools.com/products/nbp-actions-9-frequency-separation-tools-for-photoshop

 

NBP Actions 9: Frequency Separation Tools:  Why not have endless choice in how you run it?  Frequency separation is one of the most famed retouching techniques in Photoshop, and useful for a multitude of different things.    For most people, skin cleanup is the main use it for it, but most artists don't have a full grasp of what all it can do, or how many different small options and variations exist for it.  It's a lot more than you may realize.

This collection is also great for advanced retouchers who want a streamlined set of frequency separation Actions at the ready so they can set things up for a variety of uses.  Includes options with smoothing operators (filters) Median, Surface Blur and Gaussian (variations on each) and lots of convenient misc options to set things up.