Acne pits are generally depressed scars left after acne has healed, there is no such thing as how to get rid of depressed scars most effectively, you can take physical therapy, filler injections and other ways to improve. 1. Physical therapy: For patients with depressed scarring, microneedling can be used as prescribed by the doctor to puncture the dermis with fine needles to proliferate collagen and repair the scar. You can also use laser therapy to stimulate collagen growth through selective photothermal effect to improve the appearance of depressed scar. 2. Fillers and injections: If there is a depressed scar on the skin, you can also take hyaluronic acid fillers to improve the appearance of the scar by filling in the depressed area and repairing the damaged tissues. For patients with depressed scarring on the skin, it is recommended to go to a regular hospital and receive standardized treatment under the guidance of a specialist.