Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide vs The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 9.3/9.8 vs The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening at 8.2/9.8. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide wins for hydration.
Head to head
Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening
Score comparison
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide takes this one, winning 2 of 5 attributes.
Scores last verified: June 2026
Attribute battle
Hydration Efficacy
Kiehl's Since 1851 WINSIrritation Risk
TIEActive Ingredient Strength
Kiehl's Since 1851 WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
10% overlapOnly in Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
35 unique
Shared ingredients
4 in common
Only in The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening
17 unique
Why Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide comes out ahead
Where Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide really shines is hydration efficacy, scoring 9.4 compared to The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening's 3.7. With Glycerin, Butylene Glycol, and Pentylene Glycol in its top ingredients, Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide delivers stronger moisture-binding capability.
Active Ingredient Strength is another area of separation. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 7.7 here versus 6.5 for The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening. That difference comes down to how each formula is built — the ingredient list tells the story.
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 the Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening relies on Glycolic Acid, Salicylic Acid, and Lactic Acid. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
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
The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Anyone who prefers clean, well-vetted formulations
Value comparison
At premium pricing with a score of 9.3, Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide delivers strong value. The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening sits at the budget level with a 8.2 score — the extra cost doesn't translate to better scores here.
Our verdict
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide wins this comparison with a meaningfully stronger ingredient profile and overall score.
Frequently asked questions
Which is better: Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide or The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening?
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.
Do Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide and The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening 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 Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide and The Ordinary AHA 30% + BHA 2% High-Strength Peeling Solution for Brightening?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.