Antiperspirants can help protect the feet.
Antiperspirants can help keep feet blister-free in addition to
preventing odor, according to a study conducted by the U.S. Army center
for health promotion and preventive medicine. The study, which consisted
of 667 cadets who went hiking after using either a 20% aluminum chloride solution or a placebo solution on their feet, showed that only 21% got
blisters compared with 41% of unprotected individuals.
However, 57% of the aluminum chloride solution users complained of
skin irritation following the hike, compared with only 6% of placebo
users, according to study results.