A settlement from small claims court should help.
I would speak to the manager and tell her in a nice fashion that you expect to be compensated for the injuries that you received. Reject all offers of products and services. Decide on a cash value before you enter the shop. If the manager will not meet your figure, then go to court.
I don't know much about oatmeal poultices and I am rather sure that I would not want to put one on my head, but it might help.