The hair of Lost
Surprisingly for a desert island, there are a lot of hairstyles on this show. There is a lot of jumping through time, through flash backs, flash forwards, flash sideways or general run of the mill time travel. They always make sure you know as a viewer that this character is different point in time with this different hair style. Every character on this show has had 6-7 prominent re-workings of their 'do.' I think that means more than what people think it means. You know, to the inner workings to the show. Hair is Lost, Lost is hair.