Dr. Martin Picard

Hair graying, there's plasticity here.

And then we found hairs where the hair was white and it went back to being dark.

And...

This was a little confusing.

And then we had one participant who brought a hair, a young Asian woman, and her hair was so beautiful.

She had like really dark hair and then their root was dark.

And then there was a segment, two centimeters, but like almost an inch of white.

And then the rest of the hair was dark again.

Did she share?

Yeah, exactly.

So that became the question.

So then we developed, we said, okay, we need to do this quantitatively.

She didn't tell you what had happened?

No, no, no.

We were collecting hairs in Ziploc bags.

So now people started to mail us, you know, Ziploc bags with hair.

And we got some hairs from France, hairs from Canada, from different places in the U.S., across body regions in South Asian, African American, you know, white areas.

So, it was clearly real.

And then we thought we need to develop an objective, semi-quantitative method to quantify stress.

Because we quantify now, we bought a scanner, you know, old style like photo digitization system.