It has been found possible to convert the thin aqueous solution into a
viscous solution for the rol!-on dispenser, or into a gel for the squeeze bottle
or tube. Gelling has been effected by adding 4-8 per cent boric acid to an
approximately 20 per cent solution of the aluminium chlorohydroxide.
Borax has also been used. It is claimed that the further addition of alcohol,
glycerin and propy!ene glycol serves to lubricate the gel as it is extruded
from its container. 4