Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum vs Paula's Choice Clinical Niacinamide 20% Treatment
Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum scores 8.4/9.8 and Paula's Choice Clinical Niacinamide 20% Treatment scores 8.7/9.8 — a near-tie where your skin type decides the winner.
Head to head
KateCeuticals® SuperCell Rejuvenation Peptide Serum
Clinical Niacinamide 20% Treatment
Score comparison
These two are neck and neck — just 0.3 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
TIEIrritation Risk
TIEActive Ingredient Strength
Paula's Choice WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
43% overlapOnly in Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum
11 unique
Shared ingredients
10 in common
Only in Paula's Choice Clinical Niacinamide 20% Treatment
13 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.
Paula's Choice Clinical Niacinamide 20% Treatment brings Niacinamide, Acetyl Glucosamine, and Ascorbyl Glucoside as actives, while kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum relies on Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-2, Zingiber Officinale (Ginger) Root Extract, and Bisabolol. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Anyone who prefers clean, well-vetted formulations
Paula's Choice Clinical Niacinamide 20% Treatment is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Anyone who prefers clean, well-vetted formulations
Value comparison
At luxury pricing with a score of 8.4, Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum is a decent pick. Paula's Choice Clinical Niacinamide 20% Treatment sits at the mid-range level with a 8.7 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: Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum or Paula's Choice Clinical Niacinamide 20% Treatment?
Based on ingredient analysis, Paula's Choice Clinical Niacinamide 20% Treatment scores higher overall. See the full score breakdown above for details on each attribute.
Do Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum and Paula's Choice Clinical Niacinamide 20% Treatment share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum and Paula's Choice Clinical Niacinamide 20% Treatment?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.