In 2026, a 64-person trial tested CE Ferulic — vitamin C, E and ferulic acid serum — after CO2 laser for indented acne scars. It showed faster short-term healing, but enrollment was Fitzpatrick type IV only, limiting direct use for lighter or darker skin tones. Investigators put serum on one cheek and saline on the other right after laser, according to HCPLive in its trial summary. HCPLive notes the analysis included 64 of 66 enrolled adults aged 18-50 in China.
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
- Who was studied?
- What improved in two weeks?
- Why does pigment need longer watch?
- How to plan your aftercare?
Who was studied?
The trial enrolled only Fitzpatrick type IV skin, according to PubMed Central's study page for the January 2026 dermatology paper. That record lists mean age 29.5 years and 68.8% female.
If you burn easily or have deep brown to black skin, you fall outside the tested group. Expect less certainty about redness, pigment response and scab timing for those tones. Ask how your clinic adjusts for your tone.
What improved in two weeks?
Medical Dialogues reports more complete scab detachment on the serum side by Day 7. Redness and pigment readings — erythema and melanin levels — also ran lower. That points to calmer early healing.
By Day 14, Medical Dialogues notes higher hydration and lower transepidermal water loss on the serum side. Transepidermal water loss means water escaping through skin. The pattern suggests faster barrier repair.
Why does pigment need longer watch?
Healio Dermatology quotes dermatologists warning that ablative acne-scar lasers can cause uneven color or dark marks after inflammation. They urge careful counseling, conservative settings and attention to how melanin absorbs laser energy in skin of color. Settings matter more when pigment absorbs more energy. A review in Skin Therapy Letter states pigment darkening in darker skin almost always shows within 3-4 weeks after resurfacing in its laser overview.
Fourteen days ends before that window closes. Short follow-up captures scabs and redness, not the full pigment story. MedicalXpress, reporting Waibel and colleagues, describes an earlier split-face laser test in 15 healthy adults aged 30-55 treated for sun damage. Antioxidant went on one side and vehicle on the other, with checks daily on Days 1-7. Faster healing tracked with higher beta fibroblast growth-factor expression, a small mechanistic signal.
How to plan your aftercare?
HCPLive frames the serum as short-term healing support alongside sun protection and clinician-directed pre- and post-care. That keeps expectations on early comfort and barrier recovery, not lasting scar erasure. Your plan still centers on pigment control.
Use your visit to lock details. Cover these points: Bring photos of past healing and a full product list to that visit. Ask what pigment watch extends past week four for your tone.
- Your pigment history, including past dark marks after acne, burns or procedures.
- Your current actives, retinoids and lightening products, plus planned pause dates.
- Sun protection, follow-up timing and what color change triggers a call.
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