Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide vs Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 9.3/9.8 vs Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles at 8.6/9.8. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide wins for active ingredients.
Head to head
Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles
Score comparison
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Then I Met You WINSIrritation Risk
TIEActive Ingredient Strength
Kiehl's Since 1851 WINSIngredient Transparency
Then I Met You WINSFormulation Safety
TIEIngredient face-off
18% overlapOnly in Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
32 unique
Shared ingredients
7 in common
Only in Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles
31 unique
Why Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide comes out ahead
Where Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide really shines is active ingredient strength, scoring 7.7 compared to Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles's 5.0. Its formula features Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles 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 then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles relies on Snail Secretion Filtrate, Niacinamide, and Caffeine. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
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
Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Butylene Glycol
- Anyone who prefers clean, well-vetted formulations
Value comparison
Both sit in the premium bracket, so value comes down to formulation quality. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide gets the nod here with its 9.3 overall score — you're getting more for a similar outlay.
Our verdict
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide edges ahead with a slightly stronger formulation, but Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles is still a solid pick.
Frequently asked questions
Which is better: Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide or Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles?
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 Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide and Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide and Then I Met You Snail Mucin Firming and Brightening Korean Eye Cream with Volufiline, Peptides, & Collagen for Fine Lines & Wrinkles?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.