It looks like everyone who is making alcohol gel is looking for alternative thickeners as Carbopol is getting very hard to find, especially the Ultrez grades.
Necessity is the mother of invention.
According to this
HPMC is soluble in up to 70% alcohol, while CMC and HEC are insoluble.
This patent advises to make a cellulose suspension in alcohol first and then add the water.
Has anyone read or tried to make alcohol gel with cellulose based thickeners?