I need a rusty skirt for one of my dolls. So last night I put a solution of 50% water and 50% white vinegar on the lace and placed the lace and some rusty items in a plastic container. In the morning I could already see green and some rust on the lace. I left it out in the sun today. I can't wait to see what it looks like tonight. I will rinse it in salt water to stop the rust and then in plain water. Here are the results - a success!