00:00You might think that gray hair is due to stress.
00:02We all hear that people turn gray because of oxidative stress
00:07or because of damage to the DNA of their hair or something like that.
00:09Well, it's not true.
00:12It turns out that what really makes hair turn gray has to do with the stem cells
00:17that normally renew the pigments in our hair,
00:21giving them their color when the hair follicles grow back after falling out.
00:24Well, it turns out that stem cells are really useful for what we call rejuvenation in probably many ways,
00:32but the one that scientists think is the easiest to get at right now is regrowing your original hair color.
00:39So by taking a look at how these stem cells move around and how they change when they move around in the hair follicle,
00:46scientists think they found a trick that will actually allow your hair to return to its natural color.
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