no no no no do NOT use anything with a high alcohol content. This will serve only to dry up your piercing.

what you need to do is use a saline soak. This is warm water with plain table salt or saline solution mixed in. Soak a cotton pad in the solution and hold it to your ear. The warm water draws the shit out and the salt cleans it and disinfects.

ive got a cartilege piercing stretched to 4mm and my ear would have gone black and fallen off a long time ago if i hadnt been given this advice.