A January 2026 split-face trial found topical vitamin C, vitamin E and ferulic acid improved healing after ablative fractional CO2 laser for moderate-to-severe atrophic acne scars. If you have icepick scars — narrow, deep pits that form tight tracts into skin — ask first whether laser alone fits your scars and how an antioxidant fits your aftercare.
Ablative fractional CO2 laser removes tiny columns of skin to trigger repair. The tested antioxidant combines vitamins C and E with ferulic acid to fight laser-related oxidative stress. For icepick scars, the laser question matters as much as the serum question.
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
- What did the 2026 trial test?
- Why do icepick scars change the first question?
- What should you ask about healing and pigment?
- What should you ask about sun care and medicines?
What did the 2026 trial test?
The U.S. National Library of Medicine/PubMed lists the study as a randomized, investigator-blinded, split-face trial registered as ChiCTR2300078214 trial record. One cheek received the antioxidant after laser. The other cheek received normal saline.
The Journal of Cosmetic Dermatology via PubMed Central reports faster wound healing on the antioxidant side, plus lower redness and melanin readings full trial text. Skin hydration and barrier function held up better there than on the saline side. The tested CE Ferulic formula contains 15% pure L-ascorbic acid, 1% vitamin E and 0.5% ferulic acid, according to a L'Oréal Dermatological Beauty/SkinCeuticals clinical poster. That mix stabilizes the vitamins and adds photoprotection beyond each ingredient alone.
Why do icepick scars change the first question?
Icepick scars are narrow, deep, epithelialized tracts. MDedge Dermatology, reporting dermatologist Dr. Chwalek, says these scars respond best to focal TCA CROSS or punch excision or elevation dermatologist scar-type guide. Fractional resurfacing fits rolling and boxcar scars better, or follows focal correction. Ask what scar types you have and in what mix.
Many people have icepicks plus boxcar or rolling scars. Ask whether the plan treats icepicks directly first, then uses laser for texture and shallow scars. Ask what success looks like for deep pits. Fractional laser can soften edges and improve surface. It rarely erases a deep narrow tract alone.
What should you ask about healing and pigment?
Vitamin C scavenges reactive oxygen species, limits tyrosinase-related melanin formation and supports collagen synthesis, according to a Wiley/Journal of Cosmetic Dermatology review. An earlier fractional-ablative-laser report linked the same serum to higher basic fibroblast growth factor on day five.
Useful questions to bring: Dermatologists advise against fractional laser on tanned skin or before imminent sun exposure, in MDedge coverage of AAD 2018 guidance from Dr. Tina Alster. Strict sun avoidance plus mineral sunscreen after treatment matters because hyperpigmentation leads post-laser problems.
- Will you apply the antioxidant in clinic right after laser, and how often should I use it at home?
- How will you track redness, pigment, hydration and barrier recovery?
- What laser settings fit my skin tone and scar depth?
- What pause plan do you use if crusting, swelling or darkening lasts?
What should you ask about sun care and medicines?
Memorial Sloan Kettering's CO2-laser aftercare tells patients to avoid tanning and heavy sun, use SPF 30 or higher, and avoid sun-sensitizing drugs such as doxycycline and minocycline around treatment. Ask for exact start and stop dates for sunscreen, hats, outdoor work and acne antibiotics. Ask about daily routine limits. Cleanser type, moisturizer, retinoids, acids, exfoliants, makeup and shaving can irritate healing skin.
Get a written day-by-day list for the first two weeks. Important limitation: the 2026 benefit comes from one split-face comparison against saline in a Chinese cohort with short follow-up, in an Archyde summary of Shi et al. Pigment, sensitivity and healing effects may vary by skin type, laser settings and post-care routine. Ask how the clinic adjusts the plan for your history of dark marks, sensitive skin or slow healing.
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