People mainly take Vitamin C Serum for skin & hair. Based on 7 first-hand reports and 2 meta-analyses & systematic reviews in the medical literature. Ranked #1401 of 1,974 overall.
Of reports that state an outcome, 50% are positive.
Of the people who reported each effect, the share who said it got better.
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: There is no supporting evidence that vitamin C prevents PC development. Future prospective quality studies including high-risk populations are needed.
PubMed 39077161 ↗Conclusion: The results showed increased levels of OS markers and decreased levels of antioxidant markers in patients with OSF, providing valuable indicators that may aid in clinical diagnosis and management.
PubMed 39947776 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“Same for serum vitamin C.”
“For topical c-serum with hyaluronic acid.”
“You could use a high quality vitamin C serum on your face to stimulate collagen production”
“Vit C serum, Retinoids (Rentoinc acid, retinal or retinol), niacinamide”
“Use hyaluronic acid on damp skin, microneedle, use vit c serum on top.”
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate