Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum vs Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 8.9/9.8 and Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol scores 9.1/9.8 — a near-tie where your skin type decides the winner.
Head to head
Retinol Skin-Renewing Daily Micro-Dose Serum
Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol
Score comparison
These two are neck and neck — just 0.2 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Kiehl's WINSIrritation Risk
TIEActive Ingredient Strength
Kiehl's WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
19% overlapOnly in Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum
34 unique
Shared ingredients
8 in common
Only in Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol
21 unique
Why these two are neck and neck
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.
Active Ingredient Strength is another area of separation. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 7.8 here versus 6.4 for Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol. That difference comes down to how each formula is built — the ingredient list tells the story.
Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol brings Retinol, Tocopherol, and Ceramide Np 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.
Best for your skin type
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- Targeting specific concerns like aging or uneven tone — Niacinamide does the heavy lifting
Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Dimethyl Isosorbide
- Anyone who prefers clean, well-vetted formulations
Value comparison
At premium pricing with a score of 8.9, Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum is a decent pick. Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol sits at the luxury level with a 9.1 score — the higher investment pays off in formulation quality.
Our verdict
It's a close call — both products score within 0.3 points of each other. Your choice depends on your specific skin concerns.
Frequently asked questions
Which is better: Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum or Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol?
Based on ingredient analysis, Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol scores higher overall. See the full score breakdown above for details on each attribute.
Do Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and Mother Science Retinol Synergist Anti-Aging Treatment Serum with Malassezin + 0.3% Encapsulated Retinol?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.