In beauty work I want to solve as much as possible before the footage reaches post-production.
Good skin preparation, suitable makeup, controlled exposure and flattering light all reduce the amount of corrective work required later.
Lighting matters
Light determines how strongly every pore, line, highlight and shadow is rendered. Poorly placed hard light can exaggerate surface texture and create tonal problems that no automated plugin can elegantly solve afterwards.
Exposure matters
I want enough information in the skin to grade and retouch properly. Bad clipping or severely compromised footage narrows the amount of room I have to work.
Focus matters
A skin-retouching plugin cannot put genuinely missing detail back into an out-of-focus face. The capture still has to be technically sound.
Fix what you can on set
The better the original beauty footage, the more subtle the retouch can remain. That's almost always where the more expensive-looking result comes from.