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. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 9.6 here versus 8.7 for Drunk Elephant A-Passioni Retinol Cream. That difference comes down to how each formula is built — the ingredient list tells the story.
Drunk Elephant A-Passioni Retinol Cream brings Niacinamide, Retinol, and Palmitoyl Tripeptide-1 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.
Both sit in the premium bracket, so value comes down to formulation quality. Drunk Elephant A-Passioni Retinol Cream gets the nod here with its 9.0 overall score — you're getting more for a similar outlay.