How do I use frequency separation in photo editing?

How do I use frequency separation in photo editing?

Frequency separation is a technique used to retouch images by separating the texture and color information. Would you like a step-by-step guide?

Yes, please provide the steps!

First, duplicate your image layer twice. Name the top layer 'Texture' and the bottom layer 'Color'. Then, apply a Gaussian blur to the 'Color' layer to smooth out the details.

What do I do after that?

Next, on the 'Texture' layer, use the High Pass filter to enhance the details. Adjust the radius until you see the texture clearly. This separates the texture from the color.

How can I blend them together?

Set the 'Texture' layer to 'Linear Light' blending mode. You can then use the healing brush or clone stamp on the 'Texture' layer to retouch without affecting the color.