innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support vs Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support scores 9.2/9.8 and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 9.3/9.8 — a near-tie where your skin type decides the winner.
Head to head
Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support
Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
Score comparison
These two are neck and neck — just 0.1 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
innisfree WINSIrritation Risk
TIEActive Ingredient Strength
Kiehl's Since 1851 WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
14% overlapOnly in innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support
36 unique
Only in Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
33 unique
Why these two are neck and neck
These two serums take different paths to a similar destination. Both formulas include solid hydrating ingredients, and the overall scores reflect that — the gap here is genuinely slim.
Hydration Efficacy is another area of separation. innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support scores 9.8 here versus 9.4 for Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide. That difference comes down to how each formula is built — the ingredient list tells the story.
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide brings Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine as actives, while innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support relies on Niacinamide, Lactobacillus Ferment Lysate, and Allantoin. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Propanediol
- Anyone who prefers clean, well-vetted formulations
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- Targeting specific concerns like aging or uneven tone — Niacinamide does the heavy lifting
Value comparison
At mid-range pricing with a score of 9.2, innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support is a decent pick. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide sits at the premium level with a 9.3 score — the higher investment pays off in formulation quality.
Our verdict
It's a close call — both products score within 0.3 points of each other. Your choice depends on your specific skin concerns.
Frequently asked questions
Which is better: innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support or Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide?
Based on ingredient analysis, Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores higher overall. See the full score breakdown above for details on each attribute.
Do innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between innisfree Green Tea Hyaluronic Acid + Niacinamide Refillable Serum for Skin Barrier Support and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.