Acne Scar Treatment: Why One Treatment Is Rarely Enough

If you've spent years covering acne scars with makeup or avoiding certain lighting, you're not alone. Acne scarring affects a significant portion of people who've experienced moderate to severe acne, but the good news is that acne scar treatment options have come a long way. The challenge is that acne scars aren't a uniform problem. Icepick, boxcar, and rolling scars each affect the skin at different levels and have different causes, which means an acne scar treatment that works well on one may barely make a difference for another.

That's why the most effective approach to treating acne scars rarely relies on a single modality. For example, a laser acne scar treatment can resurface the skin and stimulate collagen, while microneedling acne scars encourage the body's own repair response at a deeper level. Regenerative therapies and biostimulators work differently by helping to rebuild lost structural support over time. Used strategically, and often in combination with other treatments, these procedures can produce more noticeable, longer-lasting improvement.

Ahead, we break down how each acne scar treatment approach works, which scar types they're best for, and what realistic acne scar removal results look like.

What Is the Best Treatment for Acne Scars?

There's no one "best" treatment for acne scars. The right solution depends on scar type, skin tone, and how much downtime you can tolerate. Acne scars fall into a few categories: icepick, boxcar, rolling, and hypertrophic, and each responds differently to treatment. A comprehensive acne scar treatment plan usually starts by identifying which type (or combination of types) of scar you have, since that determines which technology will move the needle.

Lasers remain one of the most effective categories of acne scar therapy. Fractional lasers create controlled micro-injuries that prompt the skin to rebuild collagen. Within this category, CO2 laser acne scars treatment is considered one of the more aggressive yet effective options for acne scar resurfacing, especially for deeper boxcar and rolling scars. However, CO2 lasers typically require more downtime than gentler alternatives.

Another option is microneedling. By microneedling acne scars, the skin’s natural healing response is triggered through the micro-injuries that the tiny needles create. This option also comes with less downtime than other solutions. It can be combined with radiofrequency (RF microneedling) or platelet-rich plasma to enhance results.

PRP acne scars treatment is also effective. This modality uses your own blood plasma, which is naturally rich in growth factors, to accelerate healing and support collagen production. It's frequently paired with microneedling or laser sessions rather than used alone.

Many physicians and skin experts agree that layering treatments outperforms relying on any single modality. AEDIT founder and board-certified facial plastic and reconstructive surgeon Dr. William Kennedy shares, "No single treatment addresses every component of an acne scar. Some scars are tethered beneath the skin, others involve collagen loss, and many have surface irregularities or discoloration. By combining treatments that target each of those issues, we can achieve more comprehensive improvement than any one procedure could deliver on its own. The best results come from a personalized treatment plan, not a one-size-fits-all solution."

Why Do Different Scars Require Different Treatments?

Not all acne scars are created equal, and that's why a one-size-fits-all approach to acne scar treatment tends to fall short. Each acne scar’s depth and shape impact how your skin will respond to different treatments.

The main scar types include:

• Icepick scars, which are narrow, deep, and pitted, like tiny puncture marks that extend into the skin.
• Boxcar scars are wider with more defined, box-like edges and a relatively flat base.
• Rolling scars create a wave-like texture from bands of scar tissue tethering the skin below the surface.
• Hypertrophic and keloid scars are raised, caused by an overproduction of collagen during healing.

Shallow, textural scarring often responds best to microneedling, which stimulates collagen at a moderate depth without the more intensive downtime of resurfacing lasers. Deeper, more defined scars, such as boxcar and icepick type scars, often require more aggressive intervention, like a CO2 laser, which ablates layers of skin to encourage significant remodeling. Rolling scars, caused by fibrous bands beneath the skin, sometimes require subcision to release those bands before a laser acne scar treatment or resurfacing can be effective. Hypertrophic scars, which are raised rather than depressed, may respond better to injections or energy-based devices that target excess collagen rather than stimulate new growth.

Because most people have more than one acne scar type, providers often layer treatments to garner the best results. PRP acne scar therapy, for example, is often used with microneedling or lasers to accelerate healing and enhance collagen support. "Acne scars are not all the same, so they shouldn't all be treated the same way. The key to achieving meaningful, long-lasting improvement is identifying the type and depth of each scar and matching it to the treatment best equipped to address it. When we tailor the approach instead of relying on a single modality, we can remodel tissue more effectively and produce results that are both more comprehensive and more durable," says Dr. Kennedy.

Can Acne Scars Be Completely Removed?

In most cases, acne scars can’t be entirely removed, but they can be significantly improved. And that’s why setting realistic expectations is one of the most important parts of any acne scar treatment journey.

Acne scars form because the skin's normal collagen structure has been damaged and rebuilt imperfectly. Once that structural change has happened, no treatment—laser, needle, or injectable—can fully restore skin to its original pre-acne state. What acne scar removal treatments can do is remodel that tissue to smooth out skin texture and improve tone so that any residual scarring is less noticeable.

Providers generally describe results in terms of percentage improvement rather than total elimination. According to Dr. Kennedy, "Patients often ask what percentage of improvement they can expect, but there isn't a universal number because every scar pattern is different. With a well-designed combination treatment plan, many patients see meaningful improvement—often in the range of 50 to 80 percent—but those results are typically achieved over multiple sessions, not after a single procedure. Collagen remodeling is a gradual biological process, so patience and consistency are just as important as choosing the right treatments."

While complete removal isn't always the outcome, a well-designed, multi-session acne scar therapy plan can deliver dramatic, confidence-boosting improvement that can make all the difference between constantly noticing scarring and barely thinking about it.

Does Laser Treatment Work for Acne Scars?

Lasers are one of the most well-established and effective forms of acne scar treatment available, although how it works and who it’s best for really depends on which laser and scar type are being treated and how the laser is used.

Laser acne scar treatment works by delivering controlled energy into the skin, which safely damages tissue in a precise, targeted way to trigger the body's natural healing response. As the skin repairs itself, it produces new collagen, which can smooth texture, soften depressions, and improve overall tone. The result isn't erasure but rather collagen remodeling, which shows improvement on the surface.

The types of lasers used in acne scar resurfacing generally fall into two categories:

• Ablative lasers, like a CO2 laser, which remove the outer layers of skin entirely. These lasers tend to produce more dramatic results for deeper scarring but come with a longer recovery and more intense post-treatment care.
• Non-ablative/fractional lasers work beneath the surface without wounding the top layer, offering gentler improvement with less downtime. These less-invasive lasers are often better suited for milder scarring or patients wanting a more gradual approach.

Laser treatments tend to work best on acne scars with defined edges, such as boxcar scars, and can improve rolling scars when paired with subcision. They're often combined with other modalities, including microneedling acne scars treatment or PRP acne scars therapy, to enhance collagen support and speed healing. Combination therapy is increasingly considered the gold standard in acne scar therapy. Dr. Kennedy explains, "Fractional lasers remain one of our most effective tools for acne scar resurfacing because they can remodel collagen at greater depths than many other treatments while improving overall skin texture. That said, lasers are rarely the whole story. Pairing laser resurfacing with microneedling, PRP, or other complementary therapies allows us to target different aspects of scar formation, support healing, and stimulate collagen through multiple pathways—ultimately producing more comprehensive and natural-looking results than any single treatment alone."

Overall, laser treatments for acne scars work, and often very well, but they are rarely a standalone fix. The best results are achieved by creating a personalized plan that matches the right laser (or combination of lasers and technologies) to your specific scar type and skin goals.

When Is Laser Resurfacing Appropriate?

Laser resurfacing isn't right for everyone, but it is one of the most effective tools in acne scar treatment.

Acne scar resurfacing is generally most appropriate when:

• Scars are widespread or textural, rather than isolated to one or two deep pits. Broad resurfacing treats an overall area rather than spot-correcting.
• Skin tone and texture are affected since many lasers address discoloration and unevenness alongside scarring itself.
• Boxcar or shallow rolling scars are present, as these scars tend to respond well to the controlled remodeling lasers provide.
• Your schedule allows for extended downtime, particularly for intensive options like a CO2 laser, which requires days to weeks of recovery depending on the depth of the treatment.

Relying on a laser to improve the visible signs of acne scarring may not be the most appropriate option for:

• Deep, narrow icepick scars, which often respond better to techniques like TCA cross or subcision.
• Active acne, since resurfacing should be done once the breakouts are under control.
• Extensive downtime is a constraint. In these cases, microneedling acne scars treatment may offer a gentler, lower-recovery alternative.
• Skin tone puts you at risk for pigmentation changes. Instead, your provider may recommend more conservative energy settings or alternative modalities.

Laser resurfacing is often just one part of a layered acne scar therapy approach, paired with treatments like PRP acne scars therapy to support healing or subcision to release tethered tissue before resurfacing begins.

Is Microneedling Effective for Acne Scars?

Microneedling has become one of the more popular, clinically supported options in acne scar treatment, particularly for anyone looking for visible improvement with less downtime than more aggressive approaches.

The treatment relies on fine, sterile needles to create controlled micro-injuries in the skin. This triggers the body's natural wound-healing response, stimulating new collagen and elastin production over time. Unlike ablative treatments that remove layers of skin, microneedling works beneath the surface for gradual scar tissue remodeling from within.

Microneedling tends to work best for:

• Shallow to moderate rolling and boxcar scars, where gradual collagen building can soften texture over a series of sessions.
• Anyone who wants a lower-downtime treatment, since the recovery is typically limited to a few days of redness rather than extended healing.
• Combination protocols, where it's frequently paired with other technologies to enhance results.

However, microneedling, like so many other acne scar treatments, has its limitations. When performed alone, it is generally less effective on deep icepick scars or significant textural irregularities, which often respond better to more aggressive acne scar resurfacing methods like ablative lasers. Microneedling is also a gradual process that typically requires multiple sessions spaced weeks apart to see a change in the skin, unlike single-session, higher-intensity options.

Often, microneedling is paired with PRP. Applying platelet-rich plasma to the skin immediately after needling helps to further enhance healing and collagen support. It can also be combined with radiofrequency energy or used as a complementary step to laser acne scar treatment. "Microneedling and laser resurfacing both stimulate collagen, but they do so in different ways and at different depths. Lasers generally produce more aggressive remodeling and are often preferred for deeper or more complex acne scars, while microneedling is an excellent option for milder scarring, patients seeking less downtime, or as part of a broader treatment plan. I frequently combine microneedling with PRP because the growth factors can support the skin's natural healing response and enhance collagen remodeling, helping patients achieve more consistent improvement over a series of treatments," says Dr. Kennedy.

How Important Is Collagen Stimulation?

Collagen stimulation is the underlying mechanism in acne scar treatments since nearly every effective approach relies on creating new, healthy, well-organized collagen. Acne scars form when the skin's healing process after a breakout doesn't fully restore normal collagen structure, leaving behind pitted, textured, or fibrous tissue. Because the core problem is a collagen deficit or disorganization, most successful acne scar removal strategies work by prompting the body to rebuild collagen in a more organized, supportive way.

Different treatments stimulate collagen in different ways, which is why some options are more effective than others depending on the type of acne scarring present.

• Laser acne scar treatment uses targeted energy to create controlled injury in the skin, prompting a wound-healing cascade that produces fresh collagen. More intensive options like a CO2 laser acne scars treatment go deeper, often yielding more dramatic collagen remodeling.

• Microneedling acne scars treatment relies almost entirely on micro-injuries from the needles. These are the direct trigger for new collagen synthesis, which is why consistent, multi-session treatment matters so much.

• PRP acne scars therapy enhances the collagen-induction process even further by introducing concentrated growth factors that accelerate and support the body's own collagen-building response.

• Acne scar resurfacing techniques broadly aim to balance enough controlled injury to stimulate remodeling without causing excess damage or prolonged downtime.

Because collagen stimulation is gradual and biological, results from any acne scar therapy typically build over weeks to months, not overnight. This is also why combination approaches are common—layering treatments can stimulate collagen through multiple pathways simultaneously, often producing more comprehensive results than any single method.

What Role Do Regenerative Therapies Play?

Regenerative therapies have become an increasingly important part of modern acne scar treatment, working alongside—rather than replacing—more established options like lasers and microneedling. These treatments focus on harnessing the body's own healing biology—think growth factors, platelets, and cellular signaling—to enhance tissue repair, rather than relying solely on mechanical or thermal injury to trigger collagen production. They're less about creating controlled damage and more about amplifying the healing response once that damage has occurred.

The use of regenerative therapies, such as PRP to treat acne scars, is currently the most widely used approach. By concentrating a patient's own platelets and growth factors, PRP can be applied topically or injected after treatments like microneedling or a laser acne scar treatment to accelerate healing, reduce downtime, and potentially enhance collagen quality. Rather than working as a stand-alone acne treatment, regenerative therapies are typically layered into a broader acne scar therapy protocol. As Dr. Kennedy explains, "Regenerative therapies like PRP, PRF, or other growth factor-based treatments aren't a replacement for laser resurfacing or microneedling—they're designed to complement them. The controlled injury created by these procedures is what stimulates collagen remodeling, while regenerative therapies may help support the healing environment and optimize that response. Patients should view them as an enhancer rather than a shortcut. They can contribute to better skin quality and potentially improve overall outcomes, but meaningful acne scar improvement still depends on choosing the right primary treatment, committing to multiple sessions, and allowing time for collagen remodeling to occur."

For example, after a CO2 laser acne scar treatment, regenerative approaches may help speed healing and reduce inflammation during recovery. When used alongside acne scar resurfacing, regenerative therapies can support more even, higher-quality collagen remodeling. Because regenerative therapies work on a cellular level, they address a different piece of the acne scar removal puzzle by supporting and often accelerating results rather than causing tissue remodeling.

Can PRP Improve Acne Scars?

PRP has become a well-regarded addition to acne scar treatment, though it's important to understand what it can (and can't) do on its own.

PRP uses a concentrated sample of your own blood plasma, which is naturally rich in platelets and growth factors, to support and accelerate the skin's natural healing process. It's drawn from a simple blood sample, processed to isolate the platelet-rich component, and then applied topically or injected into treated areas.

Rather than directly remodeling scar tissue on its own, PRP works by enhancing the body's response to other treatments. It's most frequently used with microneedling and lasers as well as broader acne scar resurfacing protocols, where it's layered in as a supportive step rather than a primary intervention.

Research on PRP for acne scars is still evolving, but proponents report smoother texture and faster recovery when it's combined with mechanical or energy-based treatments, compared to those treatments alone. "The evidence supporting PRP for acne scars is encouraging, particularly when it's used alongside treatments like microneedling or fractional laser resurfacing rather than as a standalone procedure. Studies suggest PRP may enhance healing, reduce recovery time, and improve collagen remodeling, but patients shouldn't expect it to erase scars on its own. Think of PRP as an adjunct that can help optimize the results of proven resurfacing treatments. The greatest improvements still come from a comprehensive treatment plan, multiple sessions, and realistic expectations about the gradual nature of collagen remodeling," says Dr. Kennedy.

Overall, PRP can meaningfully enhance acne scar removal outcomes, particularly in terms of healing speed and skin quality, but it's best viewed as a valuable complement to established treatments rather than a standalone fix.

What Is the Best Treatment for Boxcar Scars?

Boxcar scars are wide, U-shaped depressions with sharply defined edges and a relatively flat base, which is why they tend to respond well to a specific subset of acne scar treatment options, although the best choice often depends on scar depth and skin type. Usually, boxcar scars respond well to the following treatment options:

• Laser acne scar treatment: Fractional lasers are particularly effective for boxcar scars, as they create controlled zones of injury that soften the sharp edges and encourage collagen remodeling across the depressed area.
• CO2 laser acne scars treatment: For deeper boxcar scars, ablative CO2 lasers tend to produce more dramatic results by more aggressively resurfacing the affected skin, though they require longer recovery time.
• Microneedling acne scars: For shallower boxcar scars, microneedling offers a lower-downtime option that gradually improves texture through repeated collagen stimulation.
• PRP acne scars therapy: Often paired with microneedling or laser treatments to enhance healing and support collagen quality.

Because boxcar scars vary significantly in depth, many providers recommend a layered acne scar resurfacing approach starting with the technology best suited to the scar's depth, then adding regenerative support like PRP to enhance results.

How Many Treatments Are Needed?

Acne scar treatments require multiple sessions to reach maximum impact. However, the number of treatments needed depends on several factors, including scar type and depth, the specific technology used, your skin's natural healing response, and how much improvement you're hoping to achieve. Dr. Kennedy cautions, "Acne scar treatment is a marathon, not a sprint. Most patients benefit from a series of treatments spaced several weeks apart to allow the skin to heal and new collagen to mature before the next session. Trying to accelerate that process by treating too aggressively or too frequently doesn't make collagen form faster—it can actually increase inflammation, prolong recovery, and raise the risk of complications such as post-inflammatory hyperpigmentation or scarring. Giving the skin adequate time to remodel between treatments is one of the most important factors in achieving safe, long-lasting results."

Because collagen remodeling is a gradual, biological process, most approaches require multiple sessions spaced weeks apart rather than a single visit.

• Microneedling protocols involve four to six sessions, spaced about four to six weeks apart, to see improvement in texture. Some patients continue with maintenance sessions annually.
• Non-ablative fractional lasers often require three to five sessions to achieve noticeable results, while more intensive lasers, like CO2 laser acne scar treatments, may require only one to two sessions due to their more aggressive, single-treatment intensity—though recovery time is longer.
• When PRP is combined with microneedling or laser treatments, it is typically added to each session rather than done as a separate standalone series.

Most people need several treatments over the course of months for long-lasting acne scar removal results. An experienced provider can build a personalized timeline based on your specific scars and goals.