Yes, Mark Harmon wears a wig due to hair loss--without the toupee he looks like his father.
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Mark Harmon is 6ft tall.
no they are not related
In 1980 Mark Harmon was in a soap opera ....Several productions of Love Letters.
NO HE DOESN'T WEAR A WIG! Gary had a hair transplant .
Mark Harmon is 65 years old (birthdate: September 2, 1951).