Everybody knows that hair grows faster in the summertime, but do you know why? Here’s a look at the science behind summer hair growth.
Hair growth is regulated by hormones, and one of the hormones that affects hair growth is testosterone. Testosterone is produced in greater quantities in the summer, which is why hair grows faster in the summer.
In addition to the increased production of testosterone, the sun also plays a role in summer hair growth. The sun’s UV rays stimulate the production of vitamin D, which is also …