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Vitamin X Antioxidant Serum

Serum

Vitamin X Antioxidant Serum — Reddit Reviews

by Regimen Lab

92nextscore10 verdicts

Updated August 25, 2026

15% L-ascorbic acid plus antioxidants for brightening and anti-aging benefits.

What the community says

A 15% L-ascorbic acid serum loaded with antioxidants like quercetin and silymarin. It suits those seeking brightening and free radical protection with a lightweight feel. The thick, greasy texture can discourage some users from daily use.

From Reddit

Backed by 12 threads from r/SkincareAddiction, r/scacjdiscussion and 2 more.

Read the threads ↓

What people love

  • 15% L-ascorbic acid with multiple antioxidants for broad protection
  • Lightweight texture with a dewy finish that adds glow
  • Fragrance-free and user-friendly for layering with tretinoin

Watch out for

  • Thick and greasy texture disliked by some
  • Serum can form grains after extended use
  • Relatively pricey compared to simpler vitamin C options

Product details

Key Ingredients

Skin type data limited

Where to buy

Search on Amazon

Real Reddit threads14 mentions across 12 threads

Regimen Lab Vitamin X Antioxidant Serum on Reddit, in one place — 12 threads from r/SkincareAddiction, r/scacjdiscussion and 2 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

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

Favorite is Regimen Lab Vitamin X

Mentioned

I would go with an L-ascorbic acid

Mentioned

The regimen lab is l ascorbic acid but has a bunch of other antioxidants as well and is well stabilized.

Mentioned

I’d say regimen lab overall

Mentioned

The Vitamin X serum is very thick and kind of greasy. I couldn’t use it.

Mentioned

Vit X by Regimen Labs

Positive

Regimen Lab Vitamin X

Positive

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