00:00How fast does hair grow?
00:04If you get a bad haircut, it's reassuring to know that your hair will probably grow back soon.
00:09But how soon? How fast does hair grow?
00:12The off-quoted statistic is that human hair grows 6 inches a year.
00:16However, when you take a person's racial background into account, you might see some differences.
00:21According to a 2005 study on more than 500 people, Asian hair grows the fastest, about 6 inches a year.
00:29Second is Caucasian hair, which grows a little more than 5 inches a year.
00:33Next, African hair grows about 4 inches a year.
00:37Also, it doesn't matter if you're a man or a woman.
00:40Hair growth rate is fairly similar for both males and females.
00:44There's also this nugget.
00:46Some experts think that hair grows more quickly in the summer because of dietary changes.
00:51That is, people are eating more fruits and vegetables.
00:54During the summer, people can also experience hormone changes and get increased exposure to ultraviolet radiation from the sun.
01:02But any seasonal increase in hair growth would be so marginal, it would be hard to notice.
01:08How fast does hair grow? Just another one of life's little mysteries.
01:12Have a good time!
01:14And we'll see you next time!
01:16The new trend is becoming more healthy!
01:18The new trend is becoming more helpful in perspective.
01:20You can see the trend near the future.
01:22There are a lot of different people who have taken care of.
01:24You can see how it's been looking for the future.
01:26So the trend is having a little bit more to the future.
01:28And the trend is getting too much more to the future.
01:30And the trend is staying at the moment.
01:32The trend is becoming more healthy.
01:34It's about how the trend is!
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