""Used this to get old stains out of baby clothes. Works very well. I have four onesies and a burp cloth I'm going to redo, but the rest look brand new. (Note: The stains on these clothes were years old.)""
Rub a Dial Gold Bar of soap, that is wet, on the collar, do a little bit of scrubing between your fists and no more ring around the collar. Works great on shirt cuffs too. I even got the cuffs of a pink hoodie lookin brand new :)