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Medicube Deep Vita A Retinol Serum scores 8.9/9.8 vs Isntree C-Niacin Toning Ampoule at 8.1/9.8. Medicube Deep Vita A Retinol Serum wins for active ingredients.
Medicube Deep Vita A Retinol Serum edges ahead, winning 3 of 5 attributes.
Scores last verified: April 2026
14 unique
12 in common
Where Medicube Deep Vita A Retinol Serum really shines is active ingredient strength, scoring 6.7 compared to Isntree C-Niacin Toning Ampoule's 4.7. 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 8.5 for Isntree C-Niacin Toning Ampoule. 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 isntree C-Niacin Toning Ampoule relies on Niacinamide, Melia Azadirachta Flower Extract, and Melia Azadirachta Leaf Extract. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Isntree C-Niacin Toning Ampoule is better if you have
Medicube Deep Vita A Retinol Serum is better if you have
Isntree C-Niacin Toning Ampoule comes in at budget pricing with a 8.1 score, which is solid value at that tier.
Medicube Deep Vita A Retinol Serum edges ahead with a slightly stronger formulation, but Isntree C-Niacin Toning Ampoule is still a solid pick.
Based on ingredient analysis, Medicube Deep Vita A Retinol Serum scores higher overall. See the full score breakdown above for details on each attribute.
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.