'Looked like she'd lost the tip of her finger and finger-nail': Woman's hand slashed in random knife attack at Melbourne car wash

A man's face was slashed and a woman's hand cut, in random machete attacks in Melbourne's south east.

The two offenders fled the scenes in a white Subaru, which was stolen during a terrifying home invasion in Prahran.

The bloody aftermath of the random daylight attack remained today at a Cheltenham car wash, after a 37-year-old woman was slashed with a machete.

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The woman was confronted at Ezy Bay Wash while vacuuming her hatchback.

"She was quite distressed, you could see she was going into shock when she started shivering," witness Jarod told 9News.

"She had a slash on her wrist which was bleeding quite heavily. She also looked like she'd lost the tip of her finger and her finger-nail, so she was in a lot of pain."

The male and female offender took off with her handbag and phone.

It's understood the same armed pair targeted a 73- year- old man in Keysborough on Friday night, slashing him three times.

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Neighbour Lina Te said the elderly man's wife told her he'd suffered a cut to the neck and face, across his cheek.

The thugs fled both scenes in a car stolen during a terrifying home invasion in Prahran on Friday afternoon.

"They were asking where's Adam? Where's Peter? Where's my 20k?," the home invasion victim told 9News, not wanting to be identified on camera.

"[I] tried to tell them we didn't know an Adam, you've got the wrong house.

"Then she puled out a machete."

9News understands police were also called to Patterson Lakes this morning where the stolen Subaru was spotted driving around suspiciously.

Despite concerns, nothing was stolen from the area.

"I honestly feel like crying knowing that it's my car that they're in and that someone actually got hit with the machete," the woman said.

The offenders remain on the run.

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