On January 22, about 7.40pm, a woman entered the pharmacy and appeared to browse the store.
The woman was seen placing two boxes of hair colour under her armpit, before walking to the end of an aisle and placing the items in her handbag.
She then left the store without paying.
Police have released a CCTV image of a woman to whom they would like to speak.
The woman is described as being dark skinned, 20-25 years of age, 165-170cm tall, of thin build and having long dark curly hair.
She was wearing a black singlet, black shorts, black baseball cap with a white adidas logo, long thin gold necklace and grey
She was carrying a large white wallet and large black handbag.
If you know the identity of this person or have any information about this offence, make a report online at www.crimestopperswa.com.au or call Crime Stoppers on 1800 333 000, where all calls are strictly confidential, and rewards are offered.
Quote reference number 8020.