Police are hunting for a man who was caught on camera repeatedly slashing a woman inside a Bronx apartment building last week.

The two were arguing about the victim’s roommate when the man launched his brutal attack inside a building on East 180th Street near Washington Avenue in Belmont at about 9:10 p.m. Thursday, cops said.

Surveillance video from the building’s hallway shows the suspect trying to slash the woman with a box cutter at least a dozen times – connecting multiple strikes.

Throughout the disturbing attack, the woman tries to defend herself and push the suspect away, the footage shows.

The woman suffered cuts to her face, arms and hands. She was taken to St. Barnabas Hospital for treatment.