innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging vs Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum
innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging scores 9.1/9.8 and Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 8.9/9.8 — a near-tie where your skin type decides the winner.
Head to head
Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging
Retinol Skin-Renewing Daily Micro-Dose Serum
Score comparison
These two are neck and neck — just 0.2 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Kiehl's WINSIrritation Risk
TIEActive Ingredient Strength
Kiehl's WINSIngredient Transparency
Kiehl's WINSFormulation Safety
TIEIngredient face-off
17% overlapOnly in innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging
38 unique
Shared ingredients
8 in common
Only in Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum
34 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.
Ingredient Transparency is another area of separation. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 8.5 here versus 7.0 for innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging. That difference comes down to how each formula is built — the ingredient list tells the story.
innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging brings Niacinamide, Allantoin, and Tocopherol as actives, while kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum relies on Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging 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
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum 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 9.1, innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging delivers strong value. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum sits at the premium level with a 8.9 score — the extra cost doesn't translate to better scores here.
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 Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging or Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum?
Based on ingredient analysis, innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging scores higher overall. See the full score breakdown above for details on each attribute.
Do innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging and Kiehl's Retinol Skin-Renewing Daily Micro-Dose 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 innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging and Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.