Yes, because each type of acne scar differs in depth and structure, the appropriate procedure also varies. Depressed acne scars are broadly divided into three types: boxcar scars, which have angular, flat depressions with distinct borders; rolling scars, which have gentle, wave-like depressions; and ice pick scars, which are narrow and deep, as if pierced by an awl. Since each type involves different depths and directions of dermal collagen loss, it is difficult to improve all scars equally with a single procedure.
| Scar type | Appearance | Laser |
|---|---|---|
| Boxcar | Flat depression with distinct borders | Fractional laser, RF needling, JUVGEN |
| Rolling | Gentle wave-like depression | Subcision + RF needling, collagen booster, dermal filler, JUVGEN |
| Ice pick | Narrow, deep punctate depression | Fractional laser, TCA cross, and other focal intensive treatments |
In practice, most skin has a mix of several types. Therefore, rather than asking 'which device is better,' the key to scar treatment results is first 'mapping your scar'—that is, diagnosing each type.




