rosemary

I 've got a bottle of rosemary which I do not know how to use. Just thinking of throwing it way. Out of curiosity, I search the internet and found the following information:

Rosemary has a very old reputation for improving memory, and has been used as a symbol for remembrance (as in worn during weddings, war commemorations and funerals) in Europe, probably as a result of this reputation. Students in ancient Greece are reported to have worn sprigs of rosemary in their hair while studying for exams to improve their memory, and mourners would throw it into graves as a symbol of remembrance for the dead. In Shakespeare's Hamlet, Ophelia says, "There's rosemary, that's for remembrance".
Rosemary and its constituents carnosol and ursolic acid have been shown to inhibit the growth of skin tumors and to provide a natural anti-oxidant protection against skin cancer and photodamage. [citation needed]Don Quixote (Chapter XVII, 1st volume) mixes it in its recipe of the miraculous balm of Fierabras with revolting results.
http://en.wikipedia.org/wiki/Rosemary

Is this true? Well there is two thing I learn from this : 1.the behaviour of Greece is quite similar to Japanese who also wear a cloth on their head when they prepare for examination. 2.I can keep the bottle