✶

Klairs Fundamental A… vs Medicube Deep Vita A… — Which Is Better? | Gracie

Products
Ingredients
Brands
K-Beauty
Blog
How We Score

Gracie
/Compare
/Klairs Fundamental Ampule Mist
/vs
/Medicube Deep Vita A Retinol Serum

Klairs Fundamental Ampule Mist vs Medicube Deep Vita A Retinol Serum

Medicube Deep Vita A Retinol Serum scores 8.9/9.8 vs Klairs Fundamental Ampule Mist at 7.3/9.8. Medicube Deep Vita A Retinol Serum wins for active ingredients.

Head to head

Klairs

Fundamental Ampule Mist

serummid-range

7.3

Buy at Olive Young

Compare

Best Moisturisers
Best Serums
Best Cleansers
Best SPF

Ingredients

Niacinamide
Retinol
Hyaluronic Acid
Salicylic Acid

K-Beauty

K-Beauty Hub
K-Beauty Moisturisers
K-Beauty Serums
K-Beauty Sunscreens

About

Methodology
About Us
All Brands
All Products

Gracie

Honest skincare intel. No jargon, no gatekeeping — just the ingredients decoded.

Medicube

Deep Vita A Retinol Serum

serum

8.9

Score comparison

Medicube Deep Vita A Retinol Serum takes this one, winning 3 of 5 attributes.

Klairs wins 0

Tied 2

Medicube wins 3

9.0

Klairs

Medicube

Ingredient face-off

15% overlap

12Klairs

8Shared

53Medicube

Only in Klairs Fundamental Ampule Mist

4 unique

Betaine Centella Asiatica Extract Arginine Carbomer

Shared ingredients

8 in common

Water Glycerin Butylene Glycol 2-Hexanediol Sodium Hyaluronate Panthenol Allantoin Ethylhexylglycerin

Only in Medicube Deep Vita A Retinol Serum

45 unique

Dipropylene Glycol Propanediol Niacinamide Coco-Caprylate/Caprate Squalane Polyglyceryl-3 Distearate Dimethyl Isosorbide Pentylene Glycol Hydrogenated Lecithin Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Why Medicube Deep Vita A Retinol Serum comes out ahead

Where Medicube Deep Vita A Retinol Serum really shines is active ingredient strength, scoring 6.7 compared to Klairs Fundamental Ampule Mist's 2.6. Its formula features Niacinamide, Allantoin, and Dipotassium Glycyrrhizate in high positions, signalling meaningful concentrations.

Hydration Efficacy is another area of separation. Medicube Deep Vita A Retinol Serum scores 9.8 here versus 7.2 for Klairs Fundamental Ampule Mist. That difference comes down to how each formula is built — the ingredient list tells the story.

Medicube Deep Vita A Retinol Serum brings Niacinamide, Allantoin, and Dipotassium Glycyrrhizate as actives, while klairs Fundamental Ampule Mist relies on Centella Asiatica Extract, Allantoin, and Arginine. Both approaches have merit, but the positioning and supporting ingredients make the difference.

Best for your skin type

Klairs Fundamental Ampule Mist is better if you have

Sensitive skin — the low-irritation formula keeps things gentle
Dry or dehydrated skin that craves moisture, thanks to Glycerin
Anyone who prefers clean, well-vetted formulations

Medicube Deep Vita A Retinol Serum is better if you have

Sensitive skin — the low-irritation formula keeps things gentle
Dry or dehydrated skin that craves moisture, thanks to Dipropylene Glycol
Anyone who prefers clean, well-vetted formulations

Value comparison

Klairs Fundamental Ampule Mist comes in at mid-range pricing with a 7.3 score, which is solid value at that tier.

Our verdict

✶ Our verdict

+1.6 lead

Medicube Deep Vita A Retinol Serum wins this comparison with a meaningfully stronger ingredient profile and overall score.

7.3Klairs

8.9Medicube

Frequently asked questions

Which is better: Klairs Fundamental Ampule Mist or Medicube Deep Vita A Retinol Serum?

Based on ingredient analysis, Medicube Deep Vita A Retinol Serum scores higher overall. See the full score breakdown above for details on each attribute.

Do Klairs Fundamental Ampule Mist and Medicube Deep Vita A Retinol Serum share ingredients?

Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.

What's the main difference between Klairs Fundamental Ampule Mist and Medicube Deep Vita A Retinol Serum?

The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.

Full analysis: Klairs Fundamental Ampule Mist→Full analysis: Medicube Deep Vita A Retinol Serum→

We may earn a commission from purchases made through our links, at no extra cost to you. This helps us keep Gracie free and independent.

Some links on this site are affiliate links. We may earn a commission from purchases made through our links, at no extra cost to you. This helps us keep Gracie free and independent.

+35 more