Laser Virtue RF JUVELOOK

Acne Scars: What Procedures Can Improve Them?

Acne scars—classified as boxcar, rolling, or ice pick types—may improve when a combination of procedures such as RF needling, fractional laser, subcision, TCA cross, and JUVGEN is used. In general, improvement is often noticeable after 3 to 5 sessions at intervals of about 4 weeks.

Do Different Scar Types (Boxcar, Rolling, Ice Pick) Require Different Treatments?

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 typeAppearanceLaser
BoxcarFlat depression with distinct bordersFractional laser, RF needling, JUVGEN
RollingGentle wave-like depressionSubcision + RF needling, collagen booster, dermal filler, JUVGEN
Ice pickNarrow, deep punctate depressionFractional 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.


RF Needling or Fraxel: Which Is Right for You?

It depends on the depth and shape of the scar and your skin type. RF needling (Virtue RF) delivers radiofrequency heat directly into the dermis through microneedles, which is advantageous for dermal remodeling in deep depressions; downtime is relatively short, and the risk of pigmentation tends to be comparatively low. Fractional lasers such as Fraxel induce regeneration from the surface, so they are known to be advantageous for shallow scars and when skin texture, pores, and pigmentation are also concerns.

It is not a matter of one being better than the other; they are tools with different expected effects. If deep rolling or boxcar scars are the main issue, the plan centers on RF needling; if surface irregularities and tone problems are prominent, the plan centers on fractional laser. They are often used in staggered sessions. The most efficient approach is to set priorities after a diagnosis.


Do Depressed Scars Need Subcision?

If the scar has an adherent base, subcision may be necessary. In cases like rolling scars where fibrous bands under the dermis pull the skin downward, delivering energy to the surface alone cannot fully elevate the depression if the tension remains. Subcision is a procedure that uses a special needle to cut these adhesive bands and release the scar base; it has been described as an effective and safe approach in reviews examining treatments for depressed acne scars.

Subcision works well in combination rather than alone. Following it with collagen-inducing procedures such as RF needling or JUVELOOK helps fill the released space with new collagen and reduces the likelihood of the released area sinking again. If pulling the skin with your hand flattens the scar, it is likely adhesive; we recommend having it checked during a consultation.


How Many Sessions Are Needed to See Improvement in Acne Scar Treatment?

Although individual results vary, improvement is often noticeable after 3 to 5 sessions at intervals of about 4 weeks. Scar treatment is a process that waits for new collagen to fill the damaged dermis, so changes appear gradually over weeks rather than immediately after the procedure, and results accumulate with successive sessions.

The number of sessions required depends on the depth, extent, and type of scar, as well as your skin type. Older, deeper scars may require a longer commitment. Rather than aiming for 100% improvement, a realistic approach is to gradually improve scars to a level where they are not noticeable under normal lighting. It is advisable to determine a treatment plan in consultation with a dermatologist.


How Do You Approach Scars With Pigmentation?

We plan the sequence by distinguishing between 'color' issues such as redness and pigmentation, and 'texture' issues such as depressions. Red marks (erythema) and brown marks (post-inflammatory hyperpigmentation) at the site of healed acne may fade over time, but depressed scars are a structural problem that does not resolve on its own. Since color and texture respond to different treatments, a combined approach is needed rather than trying to address both with a single procedure.

Generally, active acne and inflammation are stabilized first. Then, redness is managed with vascular-targeting lasers, and brown pigmentation is managed with toning-type lasers, while remodeling treatments for depressed scars are performed. RF needling causes minimal epidermal damage, so the risk of pigmentation is relatively low, making it an option even for pigmented skin. Since the priority depends on your skin's condition, we recommend deciding the sequence through a consultation.


References

Kim Soohyung

Dermatologist · Heal House Suwon Branch

I will be your skin doctor who goes beyond healthy skin to bring positive changes to your life.