The good people over at PHLEARN are at it again, this time with a great little tutorial on creating skin texture from scratch. I find that healing (or whichever method you use) under the eyes in particular tends to destroy the most texture, so this is a great way to put some back in.
The technique, overall, is pretty simple to follow. After the initial clean up (by way of the brush tool), we lose a decent amount of the pores. So a 50% gray later is created, and noise is applied. The noise layer is converted to a smart object and the blending mode is set to soft light, and a clipping mask is applied. Aft