US Scientists Probe How Heat Damages Human Hair

Many women and some men are very particular about their hair. One of the ways for keeping it in shape involves applying heat, but just how much of it and for how long has been mostly left to experience. A scientist from Purdue University, Indiana, is trying to find a scientific answer. VOA’s George Putic reports.

© La Voix de l'Amérique - mardi 6 octobre 2015