John- To keep my handy flux from drying out and to keep it clean I
always decant a tiny amount that I need for the next few days into a
small glass jar that used to hold expensive eye cream.
If the big jar gets dried out I add water, stir well, seal it closed
and hold it in my sonic to mix it and break up the chunks. The sonic
action returns it to a nice creamy consistency.
Have fun and make lots of jewelry