If you want to catch people while they're making funny facial expressions they have no control over you have to catch them while they're doing something that makes them react involuntarily- like eating something spicy.
Mexican photographer Josef Ibarr has chosen the habanero pepper as his face-inducing spicy substance of choice, because it never fails to make his subjects scowl, squirm and squeal.
Once they've been given the chile treatment Josef shoots one of the most honest portraits possible of these pain-wracked people, showing them the spicy face they never get to see.
See Photographer Josef Ibarr Captures Portraits Of People After Eating Habanero Peppers here