Just need some help to finish with these please:
30ad Zip fold not closed at the top (4) O?EN .... looks like open??
37a They might make better soap with money for cast (7) ME?D?RS
assume answer is menders (they might make better) . Where does the single letter misprint of an "E" fit in the wordplay?
1d Well known vesicant primarily displacing marks of skin disease (6)
FA?O?S must be FAMOUS(well known) but how does the word play work?