C-Glow — Reddit Reviews
Updated October 14, 2026
15% L-ascorbic acid fades pigmentation; fresh batches, serious oxidation management.
What the community says
A 15% L-ascorbic acid serum with ferulic acid and tocopherol, built for morning brightening and post-acne marks. It suits experienced vitamin C users who want the real active, but reactive or dehydrated skin may sting and tighten.
What this means for you
What people love
- 15% pure L-ascorbic acid — the strongest vitamin C form
- Ferulic acid plus tocopherol antioxidant pairing
- Fresh batches and a non-sticky, non-pilling finish
Watch out for
Product details
Use caution
Product Traits
Key Ingredients
Where to buy
What the science says
Hyperpigmentation
Some evidence
Vitamin C: 9 studies tested it on its own. See all 20 studies
What the studies found
- Most studies found it helped fade dark patches or make skin tone look more even
- With microneedling, vitamin C improved melasma in several studies
- It worked about as well as tranexamic acid in some microneedling studies
- Side effects were usually mild, short-lived, or not reported
Studied at 3–30%this product: 15%
Anti-Aging
Some evidence
Vitamin C: 6 studies tested it on its own. See all 17 studies
What the studies found
- All 6 studies that tested vitamin C on its own found it helped with signs of aging
- Studies found it improved wrinkles, including crow’s-feet and lines around the eyes
- It also made sun-damaged skin look smoother and improved overall skin appearance
- It did not seem to improve how much water the skin held more than a placebo
- No side effects were reported in one clinical trial
Studied at 1–30%this product: 15%
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 80 mentions across 21 threads
Geek & Gorgeous C-Glow on Reddit, in one place — 21 threads from r/SkincareAddiction, r/tretinoin and 3 more, summarized.
“I use geek & gorgeous which is number 9. Personally it works well with me.”
Positive
“I’ve heard such good things about geek and gorgeous vit C serum.”
Positive
“Geek & Gorgeous C Glow”
Positive
“am: Water cleanse -> G&g C-glow -> Bioderma aib -> BoJ Aqua Fresh”
Positive
“Vit C serum has been helping, and most of the pigmentation is almost gone now, especially on my forehead.”
Positive
“I only have a few post-acne marks left on my cheeks”
Positive
“comparable to Geek & Gorgeous, Timeless or any of the budget LAA serums”
Mentioned
“most of the comparable ones are more watery”
Mentioned
“will provide the same benefits as competitors”
Mentioned
“Highly rec the Geek & Gorgeous vit c!!”
Positive
“Defs my fave out of all the vit c’s I’ve tried and one of the few that don’t have niacinamide.”
Positive
“it actually lasts until I finish it”
Positive
“I use Geek & Gorgeous C-Glow.”
Positive
“I have tried some vitamin c derivatives but don't feel like I saw the same results.”
Positive
“one thing I am really glad I started using is ascorbic acid.”
Positive
“For example, the vitamin C serum I use is from this brand.”
Mentioned
“Lastly, I’d recommend Geek & Gorgeous in general.”
Mentioned
“They have simple, no-nonsense serums with clean formulations.”
Mentioned
