I used to use Tonal Contrast in Nik Color Efex Pro. Light feathers used a bit of Highlight contrast, applied as a brush.
I need to re-upload the plugin, it stopped working when Google bought it :-(
BTW, it works also as a plugin for Lightroom. Not sure about the Brush option there, since it does not have layers.
I have not died this, but maybe if you use the adjustment brush in LR, with Clarity as a selection, maybe 30% strength, it could works, since it is a mid tone contrast.
Best,
Fabs
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