Bug found in my friends hair. What is it?

A Calm Guide to Identifying an Unfamiliar Speck in Your Friend’s  Hair 

Insects & Entomology
It is completely natural to feel a sudden spike of anxiety when you spot an unfamiliar speck in someone’s  hair. However, the very first and most important step is to take a deep, calming breath. Without a close, magnified visual inspection, it is nearly impossible to definitively identify the object. More importantly, the vast majority of these discoveries turn out to be harmless environmental impostors rather than head lice. Misidentification is incredibly common because,