Police are appealing for public assistance after a man was spat on in Glen Waverley last month.
Investigators have been told a woman entered a Springvale Road store and put an electric toothbrush in her bag and attempted to leave the business without paying about 6.50pm on Friday 11 September.
A shop worker intercepted the woman and retrieved the toothbrush before she left.
The woman has come back into the store a short time later and abused the shop worker before spitting on him. The offender then left the store again.
She is perceived to be Caucasian, 25-35 years old, long dyed blonde hair and solid build.
The woman wore a mask and had her hair tied up when she first visited the store but when she returned to the shop she was not wearing a mask and her hair was untied.
Police have released images of a woman, who has a distinctive neck tattoo, they believe may be able to assist with their enquiries.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or file a confidential report at www.crimestoppersvic.com.au.