A knife-wielding bandit stole cash from a Dandenong North pharmacy.
He entered the Brady Road store about 5.25pm on Monday 29 May wearing an orange high-visibility jumper, a hood over his face and gloves.
Police said he demanded the 25-year-old woman working behind the counter open the till.
He produced the knife when she refused.
She then opened the register and the man took $720 in notes and fled east along Brady Road.
The incident was captured on CCTV but police are also appealing for witnesses.
The thief is described as Caucasian with an Australian accent.
Call Crime Stoppers on 1800 333 000 with any information.