Medicube

Medicube Vitamin C Serum.

Serums

About this product

A vitamin C serum formulated with vitamin C and coenzyme Q10, designed to brighten and protect skin.

Full ingredients

Hippophae Rhamnoides Water, Glycereth-26, Niacinamide, Glycerin, Water, 1,2-Hexanediol, Diphenylsiloxy Phenyl Trimethicone, Benzyl Glycol, Caprylic/Capric Triglyceride, Isononyl Isononanoate, Diethoxyethyl Succinate, Arginine, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, C12-14 Alketh-12, Octyldodeceth-16, Castor Oil/IPDI Copolymer, Gluconolactone, Ethylhexylglycerin, Allantoin, Xanthan Gum, Adenosine, Disodium EDTA, Panthenol, Dextrin Palmitate, Hydrogenated Lecithin, Olea Europaea (Olive) Fruit Oil, Cholesterol, Dibutyl Ethylhexanoyl Glutamide, Carbomer, Helianthus Annuus (Sunflower) Seed Oil, Glutathione, Ascorbic Acid, Dibutyl Lauroyl Glutamide, Citrus Medica Vulgaris Peel Oil, 3-O-Ethyl Ascorbic Acid, Ascorbyl Glucoside, Xanthophylls, Propanediol, Rosmarinus Officinalis (Rosemary) Leaf Oil, Litsea Cubeba Fruit Oil

Guru Score

81%

Yay

4 experts · Moderate agreement

What they liked

Vitamin C and coenzyme Q formulation
Tested for efficacy

What they flagged

Unusual smell

What the gurus are saying

The scent is polarising, one reviewer found it off-putting on first use, while another praised the formula itself as effective. Coenzyme Q10 pairs well with vitamin C for antioxidant support, so the combination earns marks for thoughtful formulation. Since only a couple of gurus have weighed in so far, there is not a lot to go on yet for a fuller picture of how it performs over time.

Synthesized from 4 expert reviews · most recent take June 2025

Type

SerumsDrops & dropper

Key actives

Vitamin C Niacinamide

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Ulta → Amazon → Google → iHerb →

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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

Mad About Skin

731k subs

✓Yay

"They actually spent a lot of money testing so yes it absolutely does work"

CYoung

95k subs

✓Yay

"Medicube's capture C serum was pretty good too, that's the one I'd rather pick."

Lab Muffin Beauty Science

863k subs

✓Yay

"This is a Vitamin C Serum from Medicube which contains vitamin C and co-enzyme Q and this was pretty good as well."

The Style and Beauty Doctor

222k subs

✓Mixed

"I've been suffering a little bit with hyperpigmentation, so I'm actually trying this Medicube Vitamin C Serum. They sent it to me and this is the first time I used it. It kind of smelt funky."

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

Niacinamide

Niacinamide has evidence behind it for redness, uneven tone and supporting the skin barrier, and it is usually well tolerated even by skin that reacts to most things.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Frequently asked.

What is Medicube Vitamin C Serum?

A vitamin C serum formulated with vitamin C and coenzyme Q10, designed to brighten and protect skin.

Is Medicube Vitamin C Serum worth it?

Mostly yes. 3 of the 4 gurus who reviewed it give it their stamp of approval, for a Guru Score of 81%.

What is Medicube Vitamin C Serum's Guru Score?

Medicube Vitamin C Serum holds a Guru Score of 81%. That is our read on how warmly the experts talk about it, based on the verdicts of 4 expert reviewers we have collected.