Where Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum really shines is hydration efficacy, scoring 9.6 compared to The Ordinary Multi-Active Delivery Essence for Hydration's 3.8. 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 2.0 for The Ordinary Multi-Active Delivery Essence for Hydration. 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, giving it an edge in targeted skincare benefits.
At premium pricing with a score of 9.0, Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum delivers strong value. The Ordinary Multi-Active Delivery Essence for Hydration sits at the budget level with a 6.2 score — the extra cost doesn't translate to better scores here.