Q. If someone combs his hair, touches it or his beard and some hair comes off, does he have to wash his hands three times using a vessel as after having a haircut?
A. Shulchan Aruch (O.H. 4: 19) writes that one who cuts his hair has to wash Netilas Yodaim and if he does not he will be in fear for three days.
Teshuvos Vehanhogos (O.H. 2: 5) writes in regard to cutting a bit of hair during the “Chalaka” tradition of cutting the hair of a three year old. The minhag is that different people are honored to cut a bit of the hair, and they don’t have to wash Netilas Yadaim after, as when giving someone a regular haircut, since it is only a small amount of hair.
Horav Shlomo Miller’s Shlit”a opinion is also similar and only when trimming one’s hair or beard Netilas Yodaim is required.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a