Do I really need to wear protective clothing while using isopropyl alcohol?
You'd be surprised at what things you might not think of as "chemicals" can do.  One of my co-workers got a spritz of  oil in his eye while peeling an orange, and now he is afraid when I tell him that I eat orange rinds because they are rich in vitamin C.  The moral of the story: your eyes are so sensitive that at the very least, eye protection is a must with just about anything in the lab, even oils.  I second Jon Custer's suggestion of reading the MSDS.