I have been reading the book AUTOPSY OF A CRIME LAB and it didn’t surprise me too much that there was not any scientific data on things, but I was unsurprised and extra angry to learn that:
In 1985, the FBI convened an international symposium of scientists to set its guidance for hair matching forensics. Their report was that you cannot match hair. Hairs can at best be used to exclude someone. Like my husband’s red hairs and my brown hairs.
