Dermal Fillers for Acne Scars: Temporary vs Long-Term Results

Dermal fillers are injectable substances used to lift depressed acne scars, providing immediate improvement in skin contour. In Malaysia, they are often incorporated into acne scar treatment plans for patients with rolling or boxcar scars that create visible depressions. Fillers do not remove scar tissue but temporarily fill the indentations, making the skin appear smoother.

This article explains how dermal fillers work, the types available, expected results, longevity, and their role in comprehensive acne scar management.

What Are Dermal Fillers and How Do They Work?

Dermal fillers are injectable gels designed to restore volume under depressed acne scars. By physically elevating the scarred area, fillers create a smoother skin surface.

Common fillers for acne scars include:

• Hyaluronic Acid (HA): Biodegradable, widely used, lasts 6–12 months. 
• Poly-L-lactic Acid (PLLA): Stimulates collagen production, results last 1–2 years. 
• Calcium Hydroxylapatite (CaHA): Thicker filler for deeper scars, results last 12–18 months. 

Fillers are temporary solutions, and their longevity depends on the type used, the patient’s metabolism, and scar characteristics.

Which Acne Scars Are Suitable for Fillers?

Fillers are most effective for:

• Rolling scars: Soft, depressed scars that are broad and shallow. 
• Boxcar scars: Especially those with soft edges. 

Less suitable for:

• Ice pick scars: Too narrow and deep for filler placement. 
• Severe tethered scars: Require subcision before filler injection. 

Dermal fillers are often combined with other treatments like microneedling or laser therapy to achieve both surface improvement and deeper structural remodeling.

Temporary vs Long-Term Results

Temporary Results:

• Immediate improvement in scar depth and skin contour. 
• Visible results typically last 6–12 months for HA fillers. 
• Repeat sessions are required to maintain appearance. 

Long-Term Results:

• Some fillers, like PLLA and CaHA, stimulate collagen production, providing longer-lasting improvement beyond filler dissolution. 
• Best outcomes are seen when fillers are part of a combination treatment plan, alongside therapies that remodel collagen and release tethered scars, such as subcision or microneedling. 

Procedure Overview

1. Assessment: Dermatologist evaluates scar type, depth, and suitability for filler. 
2. Preparation: Skin is cleaned, and topical or local anesthesia may be applied. 
3. Injection: Filler is precisely injected beneath scar depressions. 
4. Post-Treatment Care: Mild redness or swelling may occur for 1–3 days. 

The procedure is minimally invasive, requires no significant downtime, and allows patients to resume daily activities quickly.

Advantages of Dermal Fillers for Acne Scars

• Immediate improvement in depressed scars. 
• Minimally invasive with low downtime. 
• Can be combined with other treatments for enhanced results. 
• Reversible in most cases (particularly HA fillers) with hyaluronidase injection if needed. 

Limitations of Dermal Fillers

• Temporary results requiring repeat sessions. 
• Does not permanently remove scar tissue. 
• May not be suitable for deep or tethered scars without prior subcision. 
• Risk of bruising, swelling, or uneven results if improperly injected. 

Role of Dermal Fillers in Combination Treatments

Dermal fillers are often part of comprehensive acne scar treatment plans:

• Subcision + filler: Releases fibrotic bands before lifting depressed scars. 
• Microneedling + filler: Improves surface texture and skin thickness while filling depressions. 
• PRP or laser + filler: Enhances collagen response and overall skin quality. 

Combination strategies allow tailored treatment, addressing both depth and texture, and are discussed in Combination Treatments for Acne Scars (C12).

Safety Considerations for Malaysian Skin Types

Dermal fillers are generally safe for Fitzpatrick III–V skin types prevalent in Malaysia. Key safety tips include:

• Always use medical-grade fillers administered by trained professionals. 
• Avoid injection into infected or inflamed areas. 
• Follow post-procedure care instructions to minimize bruising or swelling. 

Who Is a Suitable Candidate?

Ideal candidates:

• Patients with mild to moderate rolling or boxcar scars. 
• Those seeking immediate improvement in depressed scars. 
• Patients willing to maintain results with repeat sessions. 

Not ideal for:

• Deep ice pick scars or scars with tight fibrotic bands (subcision needed first). 
• Individuals expecting permanent removal of all scar tissue. 

Conclusion

Dermal fillers offer a safe, minimally invasive way to improve depressed acne scars in Malaysia, with immediate visible results. While fillers are temporary, some types also stimulate collagen, contributing to longer-lasting improvement. Optimal outcomes are achieved when fillers are used as part of a combination acne scar treatment plan, integrated with procedures like subcision, microneedling, and PRP.