They squint in exasperation, crumple in disgust, and deepen with joy. Theyโre teeny โ less than a centimeter wide โ but they can be a source of endless frustration or a point of pride. Theyโre the result of a muscle twitch thatโs as uncontrollable as it is fleeting, but whether theyโve sent us to the dermatologist in a panic or reminded us of our motherโs laugh, theyโre part of who we are.
They go by unpronounceable names (orbicularis oculi contractions) and cryptic ones (Duchenne markers). But the most common, the most weighted, is crowโs-feet. And theyโre more complicated, more nuanced, than we ever thought.