I've been piercing at my spa for a few months now. I did my first cartilege piercing on a coworker, then moved on to clients. I've never had trouble with it.
Guns can not technically be completely sterilized, but you can do things to help. I always spirtz everything your using with alcohol prior to the piercing. And never touch the jewely, I used tweezers to get the jewelery into the gun. Also clean the skin with antiseptic before and after the piercing.
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It is normal to have a fleshy lump on the back of your cartilege after it is pierced (is this what you mean by swollen?). Keep cleaning it, do not touch it, and if the swelling and redness do not subside, take it out, let it heal and try again
sorry, only just come back to this one.
Sorry to tell you this Spakitten, but it is not normal to have a 'fleshy lump' on the back of a cart piercing...well not unless you gun them.
One word about that: trauma.
That lump could be a certain type of irritation caused by gunning carts (Hypertrophic scarring), or much worse,it could be a keloid...not a normal thing at all.
I also have to say, giving your gun a spritz of something wont really do a great deal at all,
& please, dont clean the 'piercing' after you've done it, there is no need if the area was sanitised beforehand, all it will do is sting to holy heck.
& finally...
take it out & try again?
A cart piercing can take up to 12 months to fully heal, & thats without the added trauma of using a gun here,
the redness is caused by trauma....damage!
if its not settling down, then yes, do remove it,
but then let it heal for a good few months, take care of the damage, & have it pierced the only safe way to pierce carts.....a sterile, single use medical standard needle.
Sorry if that was a bit of a word avalanche, but I believe it needed to be pointed out.
Guns are not for cartilage.