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Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 9.0/9.8 vs Kate Somerville KateCeuticals® Firming Serum with Hyaluronic Acid at 7.7/9.8. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum wins for hydration.
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum takes this one, winning 2 of 5 attributes.
Scores last verified: June 2026
36 unique
8 in common
34 unique
Where Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum really shines is hydration efficacy, scoring 9.6 compared to Kate Somerville KateCeuticals® Firming Serum with Hyaluronic Acid's 6.6. With Glycerin, Butylene Glycol, and Pentylene Glycol in its top ingredients, Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum delivers stronger moisture-binding capability.
Active Ingredient Strength is another area of separation. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 7.8 here versus 4.9 for Kate Somerville KateCeuticals® Firming Serum with Hyaluronic Acid. That difference comes down to how each formula is built — the ingredient list tells the story.
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum brings Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine as actives, while kate Somerville KateCeuticals® Firming Serum with Hyaluronic Acid relies on Dipalmitoyl Hydroxyproline, Glycine Soja (Soybean) Seed Extract, and Adenosine. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Kate Somerville KateCeuticals® Firming Serum with Hyaluronic Acid is better if you have
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum is better if you have
At luxury pricing with a score of 7.7, Kate Somerville KateCeuticals® Firming Serum with Hyaluronic Acid is a decent pick. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum sits at the premium level with a 9.0 score — the higher investment pays off in formulation quality.
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum wins this comparison with a meaningfully stronger ingredient profile and overall score.
Based on ingredient analysis, Kiehl's Retinol Skin-Renewing Daily Micro-Dose 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.