How much does the hair grow? On average, human hair grows 1 / 3mm per day and 10-15cm per year. DHI Mexico2018-02-14T23:43:44+00:00December 5th, 2017|DHI|0 Comments Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkXingEmail About the Author: DHI Mexico