Yes, shaving can be done on Sundays/Mondays/ Wednesdays/Thursdays, and when Ekadasi or Dvadasi do not fall on these days; moreover, shaving must not be done on days on tithi-s such as Chaturdasi, Amavasai, Pournami etc., and on days which the start such as Bharani, Karthigai, one’s birth nakshatra occurs. Shaving can be done on all other days.