Yes, a vitamin C, vitamin E plus ferulic acid serum improved healing after ablative fractional CO2 for moderate-to-severe atrophic acne scars. The January 2026 randomized split-face trial found less redness and melanin and better hydration than saline. Atrophic acne scars are depressed scars caused by tissue loss. This briefing explains which scars the finding covers, what changed, its limits, and practical healing steps.
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.
Table of Contents
- Which scars are we talking about?
- What did the January 2026 serum trial show?
- Why should darker skin types be cautious?
- How do you protect skin while it heals?
Which scars are we talking about?
Atrophic scars divide into icepick V-shaped pits, boxcar round scars with sharp walls, and rolling undulating scars. The Cochrane Library systematic review reported icepick scars as 60-70%, boxcar as 20-30%, and rolling as 15-25% of atrophic scars, described in the Cochrane Library systematic review.
A PubMed record of a 2022 Journal of Cosmetic Dermatology study described fractional CO2 laser as effective in 121 patients without serious adverse reactions. Efficacy varied by scar type and laser energy. That variation matters because depth and edge shape change how light reaches scar tissue.
What did the January 2026 serum trial show?
The Wiley Journal of Cosmetic Dermatology trial tested vitamin C, vitamin E plus ferulic acid serum after ablative fractional CO2, reported in the Wiley Journal of Cosmetic Dermatology trial. This randomized investigator-blinded split-face trial enrolled adults with moderate-to-severe atrophic acne scars.
Serum-treated sides showed better wound healing, less erythema and melanin, and preserved hydration versus saline. Authors writing in PubMed Central and Wiley in January 2026 concluded the combination may promote skin repair compared with normal saline. Trial registration ChiCTR2300078214 linked the effect to help preventing post-inflammatory hyperpigmentation.
Why should darker skin types be cautious?
A 2022 Medscape Medline abstract reported no associated complications when vitamin C, E and ferulic serum was applied immediately after fractional ablative CO2. The same report warned results do not extend to longer courses or other formulations.
The Springer Nature Dermatology and Therapy report shows the strongest 2024-2026 evidence comes from short 14-day, single-center Chinese cohorts, detailed in the Springer Nature Dermatology and Therapy report. The sample includes a September 2025 randomized trial in Chinese women. That design limits generalizability to darker skin types and long-term pigmentation risk.
How do you protect skin while it heals?
Strict sun avoidance plus consistent broad-spectrum tinted sunscreen before and after the procedure reduces inflammation and hyperpigmentation risk. AJMC reporting NYU dermatologist Arielle Kauvar emphasizes this step for patients with skin of color, explained in the AJMC report on tinted sunscreen. Readers healing from laser can apply that advice as three checks:.
- Avoid direct sun exposure during healing
- Use broad-spectrum tinted sunscreen consistently before the procedure
- Continue consistent use after the procedure
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