How much does male hair grow in a week?

Regardless of differences at ages or genders, human hair grows at a stable speed of about ½ millimeter per day. To be more precise, according to a study, hair can grow at a rate of 0.44 mm in a day. So after a week or in other words – 7 days- your hair can be 0.01 inch or 2.45 millimeters longer.

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Hair and eyelashes