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Cosmia Bio Serum ecl… vs Medicube Deep Vita A… — Which Is Better? | Gracie

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Cosmia Bio Serum eclat a la vitamine c vs Medicube Deep Vita A Retinol Serum

Medicube Deep Vita A Retinol Serum scores 8.9/9.8 vs Cosmia Bio Serum eclat a la vitamine c at 7.2/9.8. Medicube Deep Vita A Retinol Serum wins for hydration.

Head to head

Cosmia Bio

Serum eclat a la vitamine c

serum

7.2

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Niacinamide
Retinol
Hyaluronic Acid
Salicylic Acid

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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.

Cosmia Bio wins 0

Tied 2

Medicube wins 3

9.0

Cosmia Bio

Medicube

Ingredient face-off

11% overlap

32Cosmia Bio

6Shared

53Medicube

Only in Cosmia Bio Serum eclat a la vitamine c

26 unique

Aqua (Water)Potassium Citrate Ascorbyl Glucoside Hydrogenated Ethylhexyl Olivate Gluconolactone Polyglycerin-3 Citrus Aurantium Dulcis (Orange) Fruit Extract Aloe Barbadensis Leaf Juice Powder Sodium Stearoyl Glutamate Helianthus Annuus (Sunflower) Seed Wax+16 more

Shared ingredients

6 in common

Caprylic/Capric Triglyceride Propanediol Glycerin Tocopherol Squalane Xanthan Gum

Only in Medicube Deep Vita A Retinol Serum

47 unique

Water Dipropylene Glycol Butylene Glycol 2-Hexanediol Niacinamide Coco-Caprylate/Caprate Polyglyceryl-3 Distearate Dimethyl Isosorbide Pentylene Glycol Panthenol+37 more

Why Medicube Deep Vita A Retinol Serum comes out ahead

Where Medicube Deep Vita A Retinol Serum really shines is hydration efficacy, scoring 9.8 compared to Cosmia Bio Serum eclat a la vitamine c's 6.0. With Dipropylene Glycol, Butylene Glycol, and Glycerin in its top ingredients, Medicube Deep Vita A Retinol Serum delivers stronger moisture-binding capability.

Active Ingredient Strength is another area of separation. Medicube Deep Vita A Retinol Serum scores 6.7 here versus 3.2 for Cosmia Bio Serum eclat a la vitamine c. 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 cosmia Bio Serum eclat a la vitamine c relies on Ascorbyl Glucoside, Gluconolactone, and Citrus Aurantium Dulcis (Orange) Fruit Extract. Both approaches have merit, but the positioning and supporting ingredients make the difference.

Best for your skin type

Cosmia Bio Serum eclat a la vitamine c is better if you have

Sensitive skin — the low-irritation formula keeps things gentle
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

Our verdict

✶ Our verdict

+1.7 lead

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

7.2Cosmia Bio

8.9Medicube

Frequently asked questions

Which is better: Cosmia Bio Serum eclat a la vitamine c 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 Cosmia Bio Serum eclat a la vitamine c 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 Cosmia Bio Serum eclat a la vitamine c 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: Cosmia Bio Serum eclat a la vitamine c→Full analysis: Medicube Deep Vita A Retinol Serum→

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