Hmm, that's weird. ^ ^ ^ I still think it's a misnomer, but whatever.

To quote a quick search:
"What is the difference between an antibiotic and an antiseptic?



Antibiotics can be given parenterally (intramuscularly, intravenously), orally, or applied topically to the skin in the form of a cream or ointment. Antiseptics on the other hand are substances that are applied to the skin but not absorbed significantly and which are able to reduce the possibility of infection."