Medik8

Vitamin C Serum.

Serums

About this product

A lightweight serum formulated with THD ascorbate, a stabilized form of vitamin C designed to brighten skin and support collagen.

Guru Score

75%

Yay

Early verdict · Few reviews so far

2Gurus

1Yay

1Mixed

0Nay

What they liked

THD ascorbate form of vitamin C
Less irritating than L-ascorbic acid

What they flagged

Expensive for a single-active serum

What the gurus are saying

This serum earns praise for its THD ascorbate form of vitamin C, a gentler derivative that avoids the irritation some people experience with pure ascorbic acid. The main trade-off is the price tag paired with a pretty minimal ingredient list, it's essentially vitamin C without much else supporting it, so those watching their budget may want to explore other options first.

Synthesized from 2 expert reviews · most recent take May 2025

Type

Serums

Where to buy

Amazon → Google →

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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

Dr. Vanita Rattan

1.23M subs

✓Mixed

"The next product I liked is the Medicate 7% tetrahex decolcorbate. I like that. But the only thing about this is it is expensive and it's like just vitamin C, not too many other great activives in it."

The Budget Dermatologist

723k subs

✓Yay

"This has the THD ascorbate form of vitamin C you know I love that particular derivative compared to the El ascorbic acid which is more irritating"

Frequently asked.

What is Medik8 Vitamin C Serum?

A lightweight serum formulated with THD ascorbate, a stabilized form of vitamin C designed to brighten skin and support collagen.

Is Medik8 Vitamin C Serum worth it?

Mostly yes. 1 of the 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 75%.

What is Medik8 Vitamin C Serum's Guru Score?

Medik8 Vitamin C Serum holds a Guru Score of 75%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.