The compressed gas
in shaving cream canisters originally
contained CFCs but to avoid patent
restrictions it was found that gaseous
hydrocarbons such as mixtures of
propane, butane and isobutane could
be used instead of the CFCs. Because
of the large proportion of water
in pressurized shaving cream the
normally inflammable hydrocarbons
were not a fire hazard. Many years
later the substitution of HCs for
CFCs proved to be an unanticipated
environmental boon.
If shaving cream is not available,
regular facial soap can be used
in its place but it is no adequate
substitute to proper shaving soap
as the lather is far too runny and
inconsistent.
Shaving cream is not normally used
when using an electric razor, however
some newer models feature a wet
shave. |
