Basic studio lighting....with a studio backdrop...and a metric tonne of skin work on some. But, basically, this is what using a large electronic flash light source does; it creates a good, solid, generous exposure with fairly low-ratio lighting, which can then be edited to a farethewell if desired.
Please IGNORE the YouTube idiots that advise you to "shoot wide-open." Making good portraits is far,far,farrrrrrrrr more about things other than shooting wide-open. Using HSS flash outdoors at wider apertures is a new thing that many noobs with YouTube channels have jumped on, and they crank out video after video, espousing a cannard.
There is a HELL of a lot more to making a good picture than shooting wide-open. Anybody that emphasises wide-open aperture shooting is clearly in a learning stage...it's not a "mature" technical decision to make, and to advocate it as the correct course of action as the norm is just...stupid.
Oh....always drive your car in top gear and WOT (wide-open throttle).It's the best way to drive.