Vitamin X Antioxidant Serum — Reddit Reviews
by Regimen Lab
Updated October 8, 2026
15% L-ascorbic acid plus mega-antioxidants for glow and dark spots; greasy on some.
What the community says
A 15% L-ascorbic acid serum loaded with extra antioxidants like ferulic acid, resveratrol, quercetin, and EGCG. It’s the pick for people chasing glow and faster-fading dark spots, but it can feel thick, greasy, and too much for very sensitive skin.
What this means for you
Backed by 18 threads from r/SkincareAddiction, r/scacjdiscussion and 3 more.
Read the threads ↓What people love
- 15% L-ascorbic acid with a full antioxidant stack
- Glow and dark spots fade faster
- Fragrance-free
Watch out for
- Very thick and greasy for some people
- L-ascorbic acid can sting very sensitive skin
- Not everyone sees consistent results
Product details
Where to buy
What the science says
Hyperpigmentation
Some evidence
Vitamin C: 9 studies tested it on its own. See all 20 studies
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 21 mentions across 18 threads
Regimen Lab Vitamin X Antioxidant Serum on Reddit, in one place — 18 threads from r/SkincareAddiction, r/scacjdiscussion and 3 more, summarized.
“vitamin x from regimen lab for a more anti-oxidant based formula.”
Mentioned
“Regimen labs vitamin x”
Mentioned
“VITAMIN X (serum)”
Positive
“I've only used this for several days now so I can't comment on efficacy yet, but so far, it gives me a nice glow after using it.”
Positive
“YES I DO see a difference in using an antioxidant/vitamin C serum on my dark spots/tanning especially in the summer! It makes them fade faster VS using sunscreen alone.”
Positive
“Regimen lab vitamin X or geek and gorgeous c- glow”
Mentioned
“I've been eyeing this as my next bottle, thanks”
Mentioned
“What’s everyone’s favorite vitamin C serum right now?”
Mentioned
“I am planning to grab Vitamin X and Level Serum for Black Friday.”
Mentioned
“I was really hoping Regimen Lab would have had a Labour Day Sale.”
Mentioned
“I love Regimen Lab’s Vitamin X serum.”
Positive
“Though it’s more of a general antioxidant serum, it still has 15% L-AA”
Positive
“It’s a bit of an investment”
Positive
“I just started using remedy vitamin c a month ago, and that stuff seems to help a lot too.”
Positive
“It has multiple brightening ingredients.”
Positive
“I just bought Remedy vitamin C and Regimen Lab azelaic acid, can’t wait to use them and have my PIE and PIH go awayyy”
Positive
