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Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 8.9/9.8 vs Summer Fridays Dream Oasis Deep Hydration Serum at 8.5/9.8. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide wins for active ingredients.
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide edges ahead, winning 1 of 5 attributes.
Scores last verified: June 2026
34 unique
37 unique
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 Summer Fridays Dream Oasis Deep Hydration Serum's 5.5. Its formula features Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine in high positions, signalling meaningful concentrations.
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 summer Fridays Dream Oasis Deep Hydration Serum relies on Ceramide Np, Arnica Montana Flower Extract, and Laminaria Digitata Extract. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide is better if you have
Summer Fridays Dream Oasis Deep Hydration Serum is better if you have
At premium pricing with a score of 8.9, Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide delivers strong value. Summer Fridays Dream Oasis Deep Hydration Serum sits at the mid-range level with a 8.5 score — the extra cost doesn't translate to better scores here.
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide edges ahead with a slightly stronger formulation, but Summer Fridays Dream Oasis Deep Hydration Serum is still a solid pick.
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.
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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