Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C vs Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C scores 9.4/9.8 vs Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum at 8.4/9.8. Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C wins for hydration.
Head to head
Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C
KateCeuticals® SuperCell Rejuvenation Peptide Serum
Score comparison
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C takes this one, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Bobbi Brown WINSIrritation Risk
TIEActive Ingredient Strength
Bobbi Brown WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
9% overlapOnly in Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C
63 unique
Shared ingredients
6 in common
Only in Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum
15 unique
Why Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C comes out ahead
Where Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C really shines is hydration efficacy, scoring 9.2 compared to Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum's 6.5. With Butylene Glycol, Methyl Gluceth-20, and Glycereth-26 in its top ingredients, Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C delivers stronger moisture-binding capability.
Active Ingredient Strength is another area of separation. Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C scores 6.2 here versus 5.0 for Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C brings Ascorbyl Glucoside, Tocopheryl Acetate, and Niacinamide 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
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
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
Value comparison
Both sit in the luxury bracket, so value comes down to formulation quality. Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C gets the nod here with its 9.4 overall score — you're getting more for a similar outlay.
Our verdict
Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C wins this comparison with a meaningfully stronger ingredient profile and overall score.
Frequently asked questions
Which is better: Bobbi Brown Vitamin Enriched Smoothing Serum with Niacinamide + Vitamin C or Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum?
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 Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum 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 Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.