Lucent-C Brightening Vitamin C Serum - 15% L-Ascorbic Acid — Reddit Reviews
by Prequel
Updated September 26, 2026
15% L-ascorbic acid serum for brighter, more even skin; can sting sensitive types.
What the community says
A 15% L-ascorbic acid serum with ferulic acid, ergothioneine, niacinamide, and inulin that people slot into morning routines for brightness and antioxidant support. Stronger skin usually likes it; sensitive or reactive faces may get stingy.
What this means for you
What people love
- 15% L-ascorbic acid plus ferulic acid
- Brightening with antioxidant support
- Niacinamide and inulin in the mix
Watch out for
Product details
Key Ingredients
Skin type data limited
Where to buy
What the science says
Hyperpigmentation
Some evidence
Vitamin C: 7 studies tested it on its own. See all 24 studies
What the studies found
- Most studies found vitamin C helped fade dark spots or patches
- Most studies in melasma found it made patches look lighter over time
- It worked about as well as glycolic acid in one study
- One study found only weak fading, and one dark-spot measure did not beat a placebo
Studied at 0.2–30%this product: 15%
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 8 mentions across 4 threads
Prequel Lucent-C Brightening Vitamin C Serum - 15% L-Ascorbic Acid on Reddit, in one place — 4 threads from r/tretinoin and r/30PlusSkinCare, summarized.
“this product is very similar and a fraction of the price:”
Positive
“https://prequelskin.com/products/lucent-c-vitamin-c-serum?variant=47506475778360”
Positive
“no adverse reactions at all, to any of the vitamin c’s i’ve used.”
Positive
“The prequel vit c was strong for me,”
Cautionary
“But some people do well with the Prequel Vitamin C Serum.”
Cautionary
“prequel vit c”
Cautionary
“Prequel Lucent-C serum”
Positive
“My routine varies a little bit depending on the week, but typically it goes like this-”
Positive
“AM: ... Prequel Lucent-C serum”
Positive
“Apply one pump of Prequel Lucent-C vitamin C serum”
Positive
“pat into skin and allow to dry”
Positive
“Sorry this is a finicky sunscreen routine”
Positive
