Switch to the Low Freq layer. Use the Mixer Brush or a soft clone stamp set to "Current Layer" to smooth out color blotches (redness around the nose, dark circles under eyes). Switch to the High Freq layer. Use the clone stamp (Hardness 100%) to remove pores and stray hairs.
Retouch Academy Panel (specifically the Beauty Retouch MUA Retouch retouch academy panel
I can recommend free/open-source Photoshop retouching panels (e.g., , ILM Retouch Panel ). Switch to the Low Freq layer