How long will this mark on my skin last?

Someone held a can of air duster upside down on my skin and sprayed it. It left a nasty burn mark. Wonder if it will go away soon. How long will it be there.How long will this mark on my skin last?
if it is a burn mark and if the burn was deep the mark may never go away , but a supeficial burn will fade away in 2 - 4 weeks ,How long will this mark on my skin last?
umm, im not really sure personally air duster has been on my skin and never burned me. Maybe yo are having a reaction of some sort too it. try some cortozone? or neosporin maybe?

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