Just did Snopes check on this and it is false , This story dates back to March 2011 , Post like this can be a danger to people health so be careful when posting
"When someone shares something of value with you and you benefit from it, you have a moral obligation to share it with others"
And those who post crap that may be a serious, maybe life threatening danger to others have a moral obligation to check it first.
The medically accepted first aid treatment for burns is to immediately immerse the area in cold water and keep it immersed and call an ambulance.
OP stArts his thread with "don't know if this is true" then goes on as if it is ? Duh ! Surely we are responsible to post after we have checked it out ourselves ? If we cannot or do not get a satisfactory answer then post stating you have tried to check it out. Why post something that even looks like it is a furphy and expect us all to fall for an obviously stupid way to treat a burn....really ??