I write only as user, I don’t have any further knowledge but I have never seen it. There are the hair dressers that collaborate with “whip organisations” but as far as I know, they only collect the hair of the people who want to donate it.
In general, I don’t think it is very common that people want to cut >20cm of hair in one go, and it makes the hair dresser’s work somehow less natural, as they usually don’t cut all hair at once (i.e. make a ponytail and cut it). Maybe those collaborating hair dresses would ask a customer who wants to cut their hair in one go if they may donate it?
I write only as user, I don’t have any further knowledge but I have never seen it. There are the hair dressers that collaborate with “whip organisations” but as far as I know, they only collect the hair of the people who want to donate it.
In general, I don’t think it is very common that people want to cut >20cm of hair in one go, and it makes the hair dresser’s work somehow less natural, as they usually don’t cut all hair at once (i.e. make a ponytail and cut it). Maybe those collaborating hair dresses would ask a customer who wants to cut their hair in one go if they may donate it?