Washing the face at least once.
Washing both hands, up to and including the elbows, at least once.
Wiping the head at least once:
All of the head, according to Maliki and Hanbali
¼ of the head, according to Hanafi
As few as 3 hairs, according to Shafa’i
Washing both feet at least once.
*Note: make sure there is nothing covering the body parts that must be washed for ablution that would prevent water from touching the area (example: paint, wax, nail polish, tight ring, etc.)