What are the rules for Washing after Haircuts and or Shaving and or is there a requirement at all? Also after donating blood is there a requirment to Wash hands and or a blood test and is there a difference between them foe washing meaning are they both similar to Letting blood in Talmudical Times and hence require washing or not?
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Regading haircuts see this link. http://www.dailyhalacha.com/Display.asp?PageIndex=88&ClipID=1599
In Shaalos U'Teshuvos Divrei Chachomim he brings in the name of HaRav Moshe Feinstein Zatzal that you do not have to wash your hands after shaving.
Regarding shaving or cutting facial hair, there was never an obligation to wash afterward.