Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C vs Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C scores 9.4/9.8 and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 9.3/9.8 — a near-tie where your skin type decides the winner.
Head to head
Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C
Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
Score comparison
These two are neck and neck — just 0.1 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
TIEIrritation Risk
TIEActive Ingredient Strength
Kiehl's Since 1851 WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
10% overlapOnly in Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C
62 unique
Shared ingredients
7 in common
Only in Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
32 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.
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C brings Ascorbyl Glucoside, Tocopheryl Acetate, and Niacinamide as actives, while kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide 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
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Butylene Glycol
- Anyone who prefers clean, well-vetted formulations
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide 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
Value comparison
At luxury pricing with a score of 9.4, Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C delivers strong value. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide sits at the premium level with a 9.3 score — the extra cost doesn't translate to better scores here.
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: Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C or Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide?
Based on ingredient analysis, Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C scores higher overall. See the full score breakdown above for details on each attribute.
Do Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.