How do you treat this deep laceration?

To treat a deep laceration, first control any bleeding by applying direct pressure with a clean cloth or bandage. Clean the wound gently with saline or clean water to remove debris, and avoid using alcohol or hydrogen peroxide, as they can damage tissue. If the laceration is deep or gaping, seek medical attention for possible suturing. Finally, cover the wound with a sterile dressing and keep it clean and dry while watching for signs of infection.