If you already use photoshop then you probably know that there are a lot of way to do one same thing. It’s the same as sharpening. In my experience using photoshop, I found that sharpening with High Pass work the best. And it’s easy to do.
1. Open your photo in Photoshop
Of course you have to open your photo in photoshop. You can do that by click menu File -> Open and choose your photo. Or simply drag the photo to Photoshop. Now your image show in your layer tab (on the right side).
2. Copy Layer
Copy layer by click Layer -> Duplicate Layer or drag your image layer to the New Layer icon (on the bottom right, next to the trash icon). Or just click ctrl+j (windows) cmd+j (mac).
3. Add High Pass
Click Filter -> Other -> High Pass. In the High Pass box choose the radius. I usually choose between 1 to 3 (Just make sure you can see the image outline) and click OK.
4. Add Blending Mode
Now your image all grey. No worries. Look at your Layers tab on the right side. On the left side of the word “Opacity,” there are many option of blending mode.
For the purpose of sharpening, you can choose between from the lighter sharpening, Soft Light, to more sharpening, Overlay, to the hardest, Hard Light. (I usually stick to overlay).
Now its finish and your image has been sharpen. Check closer to see the different and you can see how different the skin texture between before and after.