I am trying to make a LEGO minifig self-portrait, and I found a head that looks similar enough.
But I can't for the life of me figure out which set this is from. Do you know?
https://www.bricklink.com/v2/catalog/catalogitem.page?P=3626cpb0469#T=C&C=3
I am aware I can buy the head in isolation, I am just curious if anyone knows the set it comes from.
This is likely from the Skier in CMF Series 2:
TLG has used a number of different head molds at different times. The head that you linked to is the hollow stud mold, whereas the one listed in the inventory for the set uses the blocked open stud mold. My guess is that a small number of these sets used the blocked open stud mold, and that's how there are a few of these floating around.
If you're curious, these are the main mold variations:
