NSFW: How to edit like this in ps

Hi! Does anyone knows how to make this effect in photoshop?
I think is a kind of a threshold but not too rough.
Thanks!!!
Captura Captura2|383x500

Captura5

That would be NSFW…

Haha is a mannequin!

Haha, my boss doesn’t know that.

Convert to grapyscale or desaturate to remove colors, adjust levels or curves, maybe high pass filter first. Very well could be other ways to achieve the look.