What did the 1967 study find about bacteria on faces?

Unwashed clean-shaven faces had the most bacteria.

Bearded faces had the most bacteria.

All faces had the same amount of bacteria.

Washed faces had the most bacteria.

What does John Tregoning say about beards and hygiene?

Beards are better than clean-shaven faces if not washed.

Beards trap more bacteria than clean-shaven faces.

Bacteria are present on both bearded and clean-shaven faces.

Beards are dirtier than clean-shaven faces.

Only clean-shaven faces have bacteria.

hygienic
clean and healthy
“It is important to keep your environment hygienic.”
bacteria
tiny living things that can cause disease
“Bacteria are found on many surfaces.”
perceive
to think of something in a certain way
“People often perceive beards as dirty.”
unwashed
not cleaned
“An unwashed face can have more bacteria.”
research
the study of a subject to discover new information
“Research shows that beards may not be unhygienic.”