The 2026 trial found that calcium hydroxylapatite filler plus CO2 laser improved atrophic acne scars more than laser alone. Atrophic scars are depressed scars that sit below the surrounding skin after acne heals. The study enrolled 160 people and compared combined treatment against laser-based control care. According to Springer Nature, researchers assigned participants to two groups and tested whether filler adds to laser remodeling the 2026 randomized combination trial.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Official resource:
- Register through Springer’s official page — Use this page to review requirements and register directly.
Table of Contents
- Why combine filler with laser?
- Who responded best?
- What about healing and side effects?
- What should you do next?
Why combine filler with laser?
CO2 ablative fractional laser, often called AFL, creates tiny controlled zones of injury. The skin then builds new collagen as it heals. Calcium hydroxylapatite, often called CaHA, is an injectable filler that adds volume beneath a depression.
The idea is to lift the scar base while the laser resurfaces the top. That pairing may address both depth and texture in one plan. According to Springer Nature, the authors described the effect as synergistically enhanced scar remodeling the 2026 randomized combination trial.
Who responded best?
Results were strongest for boxcar and rolling subtypes of atrophic scars. Boxcar scars have broad edges with a defined shape. Rolling scars have soft, shallow depressions with sloping borders.
That distinction matters because scar shape affects treatment choice. According to Dermatology Times, broad defined boxcar scars and soft shallow rolling scars often need different approaches the scar-type treatment guide. Many adults have more than one scar type, so combination therapy is typically required rather than one single treatment.
What about healing and side effects?
Laser resurfacing can cause redness, swelling, crusting, and pigment change. In this trial, CaHA injection also promoted recovery after laser by reducing adverse events.
That finding supports the safety of the combined regimen in the study population. It does not mean the approach is risk-free or right for every skin type. People with active acne, infection, keloid risk, or darker skin prone to pigment change need added caution and screening.
What should you do next?
The trial was prospective and single-center, which limits how broadly the results apply. According to Springer Nature, larger multicenter trials with longer follow-up are needed before routine adoption the 2026 randomized combination trial.
Ask a dermatology practice experienced in both lasers and injectable fillers for an assessment. According to the regenerative-approaches review by Nassar and colleagues, CaHA is not reversible and needs greater technical skill, especially in sensitive facial areas the regenerative treatment review.
- Note your scar types, prior lasers, fillers, retinoids, and healing problems
- Ask whether your scars are boxcar, rolling, icepick, or mixed
- Ask about downtime, pigment risk, sun protection, and follow-up visits
- Bring photos of your scars in angled light and a list of prior treatments
You Might Also Like
- The 33-Patient RF Microneedling vs CO2 Acne Scar Trial in 2026: What the Trial Means for People With Atrophic Acne Scars
- Calcium Hydroxylapatite With CO2 Laser for Acne Scars in 2026: What the Trial Means for People With Atrophic Acne Scars
- Antioxidant Serum After Fractional CO2 Acne Scar Treatment in 2026: What the Trial Means for People With Rolling Acne Scars