Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum vs Lancôme Renergie C.R.X. Triple Serum Retinol
Lancôme Renergie C.R.X. Triple Serum Retinol scores 9.7/9.8 vs Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum at 6.4/9.8. Lancôme Renergie C.R.X. Triple Serum Retinol wins for active ingredients.
Head to head
Ultra Pure High-Potency 5.0% Niacinamide Serum
Renergie C.R.X. Triple Serum Retinol
Score comparison
Lancôme Renergie C.R.X. Triple Serum Retinol takes this one, winning 3 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Lancôme WINSIrritation Risk
Kiehl's Since 1851 WINSActive Ingredient Strength
Lancôme WINSIngredient Transparency
Lancôme WINSFormulation Safety
TIEIngredient face-off
12% overlapOnly in Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum
4 unique
Shared ingredients
6 in common
Only in Lancôme Renergie C.R.X. Triple Serum Retinol
45 unique
Why Lancôme Renergie C.R.X. Triple Serum Retinol comes out ahead
Where Lancôme Renergie C.R.X. Triple Serum Retinol really shines is active ingredient strength, scoring 9.8 compared to Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum's 3.6. Its formula features Ascorbic Acid, Adenosine, and Ceramide Ap in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. Lancôme Renergie C.R.X. Triple Serum Retinol scores 9.8 here versus 4.5 for Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
Lancôme Renergie C.R.X. Triple Serum Retinol brings Ascorbic Acid, Adenosine, and Ceramide Ap as actives, while kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum relies on Niacinamide. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Anyone who prefers clean, well-vetted formulations
Lancôme Renergie C.R.X. Triple Serum Retinol is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Propylene Glycol
- Targeting specific concerns like aging or uneven tone — Ascorbic Acid does the heavy lifting
Value comparison
At premium pricing with a score of 6.4, Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum is a decent pick. Lancôme Renergie C.R.X. Triple Serum Retinol sits at the luxury level with a 9.7 score — the higher investment pays off in formulation quality.
Our verdict
Lancôme Renergie C.R.X. Triple Serum Retinol wins this comparison with a meaningfully stronger ingredient profile and overall score.
Frequently asked questions
Which is better: Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum or Lancôme Renergie C.R.X. Triple Serum Retinol?
Based on ingredient analysis, Lancôme Renergie C.R.X. Triple Serum Retinol scores higher overall. See the full score breakdown above for details on each attribute.
Do Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum and Lancôme Renergie C.R.X. Triple Serum 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 Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum and Lancôme Renergie C.R.X. Triple Serum Retinol?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.