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Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 9.0/9.8 vs Drunk Elephant Protini Polypeptide Firming Refillable Moisturizer at 8.7/9.8. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum wins for hydration.
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum edges ahead, winning 1 of 5 attributes.
Scores last verified: April 2026
44 unique
10 in common
32 unique
Where Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum really shines is hydration efficacy, scoring 9.6 compared to Drunk Elephant Protini Polypeptide Firming Refillable Moisturizer's 7.0. 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. Drunk Elephant Protini Polypeptide Firming Refillable Moisturizer scores 9.8 here versus 7.8 for Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum. 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 drunk Elephant Protini Polypeptide Firming Refillable Moisturizer relies on Nymphaea Alba Root Extract, Copper Palmitoyl Heptapeptide-14, and Palmitoyl Tetrapeptide-7. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Drunk Elephant Protini Polypeptide Firming Refillable Moisturizer is better if you have
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum is better if you have
Both sit in the premium bracket, so value comes down to formulation quality. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum gets the nod here with its 9.0 overall score — you're getting more for a similar outlay.
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum edges ahead with a slightly stronger formulation, but Drunk Elephant Protini Polypeptide Firming Refillable Moisturizer is still a solid pick.
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.