Regimen Lab

Vitamin X Serum.

Regimen Lab
Vitamin X Serum

Serums

About this product

An antioxidant serum with 15% vitamin C, ferulic acid, resveratrol, milk thistle and EGCG, designed to brighten and protect skin.

Full ingredients

Aqua, Propanediol, Ascorbic Acid, Propylene Glycol, Dimethyl Isosorbide, Pentylene Glycol, Acetyl Zingerone, Glycerin, Tocopherol, Epigallocatechin Gallate, Ferulic Acid, Resveratrol, Genistein, Quercetin, Silymarin, Hesperidin Methyl Chalcone, Dimethylmethoxy Chromanol, Xanthan Gum, Lecithin, Sclerotium Gum, Pullulan, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin, Caprylyl Glycol, Citric Acid

Guru Score

81%

Yay

Early verdict · Few reviews so far

2Gurus

2Yay

0Mixed

0Nay

What they liked

Skin brightening effect
Well-tolerated

What they flagged

Greasy texture
Stains skin orange
Pricier than other vitamin C serums

What the gurus are saying

This serum stains skin orange when it oxidizes, but gurus found that keeping the bottle fresh and applying sunscreen everywhere prevents the halo. The 15% vitamin C blend with ferulic acid, resveratrol and milk thistle delivers brightening and antioxidant protection, with good tolerance reported. At $55 it's pricier than most vitamin C serums, though it does sell out frequently.

Synthesized from 2 expert reviews · most recent take October 2025

Type

SerumsDrops & dropper

Key actives

Vitamin CVitamin E

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

No BS Beauty

89k subs

✓Yay

"Their Vitamin X Serum is great."

All 5 takes from No BS Beauty

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"It's a little bit darker than I'd prefer, but that tells me I need to start using this one fast because 55 bucks is a little bit more expensive than the other vitamin C serums I discussed. It is a little bit greasy. It does have a little bit of a tendency to stain skin, so it's a little bit more high maintenance. So you want to make sure if you use this to follow up with sunscreen everywhere. Otherwise, you will start to notice an orange halo around your face, which isn't the most attractive look I've ever seen."

My Top 9 Vitamin C Serums for Rebuilding Collagen in Skin & Anti-Aging

"In here we've got 15% ascorbic acid, we've got Resveratrol, we got silymarin which is another great antioxidant also known as milk thistle, we've got ferulic acid and we also have EGCG which is another great ingredient for your skin. So this stuff is really nice, although I will say the more I use this the older it gets, it starts to kind of leave orangish spots on my face. When it's fresh it's fine, but when it's older it starts to, if I don't cover it up with moisturizer, it starts to get kind of an orange halo around my face."

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"It's one of the more expensive products but it's really great anti-aging product all the way around so this you'd want to use during the daytime because it contains a sorbic acid"

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"Their Vitamin X Serum is great."

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"Their Vitamin X Serum is great"

Dr Dray

2.68M subs

✓Yay

"I finished the Regimen Labs Vitamin X Serum, which is an antioxidant serum. It has ferulic acid, which is a really good antioxidant. It's what's in vitamin C serums and this one also has vitamin C in it. I really enjoyed this. I did appreciate a skin brightening effect with this product, tolerated it really well, and honestly I like this brand, Regimen Labs. Unfortunately, this has gotten so popular they sell out frequently, but it was a good one."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Vitamin C

Topical vitamin C is an antioxidant with reasonable evidence for dullness and uneven tone. It breaks down in light and air, so how a product is formulated and packaged matters as much as the percentage on the front.

Source: DermNet

Vitamin E

Vitamin E is an antioxidant, and it is often in a formula to keep the other ingredients stable rather than as the active itself. It pairs well with vitamin C, though on its own the evidence for visible change is limited.

Source: NIH, National Library of Medicine

Frequently asked.

What is Regimen Lab Vitamin X Serum?

An antioxidant serum with 15% vitamin C, ferulic acid, resveratrol, milk thistle and EGCG, designed to brighten and protect skin.

Is Regimen Lab Vitamin X Serum worth it?

Yes. All 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 81%.

What is Regimen Lab Vitamin X Serum's Guru Score?

Regimen Lab Vitamin X Serum holds a Guru Score of 81%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.