Products › Serum › Geek & Gorgeous C-Glow 15% Vitamin C Serum
C-Glow 15% Vitamin C Serum
C-Glow 15% Vitamin C Serum looks solid; a couple of actives could be dosed higher to be a standout.
Actives pyramid
What's actually in it, ranked by how well it's dosed.
What it does
Evidenced benefit intensity, derived from dosed actives.
The receipt
Every point of this grade, traced to the active, its dose, and the evidence.
Vitamin C at 15% — strong dose
Above the ~15% where 10–20% L-ascorbic acid is photoprotective and brightens tone in clinical data.
Ferulic Acid at 0.5% — effective dose
Meets the ~0.5% threshold. an antioxidant that stabilizes and boosts vitamin C + E, improving photoprotection.
Pros & cons
The honest tradeoffs.
- Vitamin C at a strong, research-backed dose (15%)
- Ferulic Acid dosed to the effective threshold (0.5%)
Best for
Who and when this fits.
Dupes & alternatives
Cheaper products in the same category that grade equal or higher.
B The Ordinary Resveratrol 3% + Ferulic Acid 3%$12
save 19% B The Ordinary Ascorbic Acid 8% + Alpha Arbutin 2%
$10
save 33%
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Get Visage VerifiedBased on published concentration thresholds and formulation science. Our algorithm predicts likely efficacy — it does not test the product. Individual results vary. Not evaluated by the FDA. You can't pay to move a grade — Visage Theory is paid only for optional audits and seal licenses, never to change a letter.