Comparison
COSRX The Vitamin C 23 Serum vs iUNIK Beta Glucan Power Moisture Serum
Two serums that compete for the same routine slot. Below is the honest side by side: what makes each one different, who each one is best for, and how real users rate them.
COSRX
The Vitamin C 23 SerumPunchy 23% L-ascorbic acid serum for serious brightening. Not for sensitive skin, for vitamin C veterans.
iUNIK
Beta Glucan Power Moisture SerumSingle hero ingredient serum with beta glucan, deeply hydrating and calming.
Choose The Vitamin C 23 Serum if
- Your main concern is Hyperpigmentation or Dull.
- You have Normal or Combination skin.
- You want Vitamin C (L-AA), Hyaluronic Acid in the formula.
- High-strength vitamin C at a low price
Choose Beta Glucan Power Moisture Serum if
- Your main concern is Dehydration or Barrier.
- You have Dry or Sensitive skin.
- You want Beta Glucan, Panthenol in the formula.
- You prefer the lower price (from €22 vs from €24).
At a glance
- Normal
- Combination
- Oily
- Dry
- Sensitive
- All
- Hyperpigmentation
- Dull
- Melasma
- Dehydration
- Barrier
- Redness
- Vitamin C (L-AA)
- Hyaluronic Acid
- Beta Glucan
- Panthenol
- High-strength vitamin C at a low price
- Visible brightening in weeks
- Plumping
- Calming
- Strong tingle is normal
- Oxidizes fast, buy small bottles
- Not for beginners
- Slightly tacky
Ingredient interactions
No flagged interactions between the key ingredients in these two products. You can layer them at different routine steps without a known conflict.
What reviewers say
The Vitamin C 23 Serum
"The Vitamin C 23 is NOT for everyone. 23% is extremely strong and will cause a negative reaction if your skin is sensitive and not used to ..."
"It has a syrupy consistency, a stronger scent, and I didn't see any major improvements after two months of daily (evening only) usage."
Beta Glucan Power Moisture Serum
"Enchanted Cosmetics 50% Beta Glucan serum is $14 at Amazon and really helped me with tret dryness."
"This serum is FANTASTIC when you are feeling tight and need some extra hydration. I already used the one in the review and I'm on my second ..."
FAQ
What is the main difference between COSRX The Vitamin C 23 Serum and iUNIK Beta Glucan Power Moisture Serum?
Both are serums. COSRX The Vitamin C 23 Serum focuses on Hyperpigmentation and Dull, while iUNIK Beta Glucan Power Moisture Serum targets Dehydration and Barrier. Ingredient wise, COSRX The Vitamin C 23 Serum leads with Vitamin C (L-AA) and Hyaluronic Acid; iUNIK Beta Glucan Power Moisture Serum uses Beta Glucan and Panthenol.
Can I use COSRX The Vitamin C 23 Serum and iUNIK Beta Glucan Power Moisture Serum together?
They serve the same routine step, so pick one at a time rather than layering.
Which one is cheaper, COSRX The Vitamin C 23 Serum or iUNIK Beta Glucan Power Moisture Serum?
iUNIK Beta Glucan Power Moisture Serum is the more affordable option based on current listed prices (from €24 vs from €22).