News to me if it is banned. I will have to check my local hardware stores next time I go in.I've always used naptha as a lubricant to wet sand shellac since water will cause it to blush if it's wet too long. I've checked multiple places and can't find naphtha. Did I miss something and the stuff has been outlawed?
In the meantime, you can try using beeswax mixed with mineral oil.
A member of my local woodturning club sells what he calls "Dust Inhibitor" wax which is a mix of white beeswax and mineral oil. I have a small container, but I have not had chance to use it yet.