Jack Black Protein Booster Skin Serum vs Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum
Jack Black Protein Booster Skin Serum scores 8.5/9.8 and Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum scores 8.4/9.8 — a near-tie where your skin type decides the winner.
Head to head
Protein Booster Skin Serum
KateCeuticals® SuperCell Rejuvenation Peptide Serum
Score comparison
These two are neck and neck — just 0.1 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Jack Black WINSIrritation Risk
TIEActive Ingredient Strength
TIEIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
21% overlapOnly in Jack Black Protein Booster Skin Serum
23 unique
Shared ingredients
6 in common
Only in Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum
15 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.
Jack Black Protein Booster Skin Serum brings Camellia Sinensis Leaf Extract, Dipeptide Diaminobutyroyl Benzylamide Diacetate, and Retinyl Palmitate 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
Jack Black Protein Booster Skin Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- 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
At premium pricing with a score of 8.5, Jack Black Protein Booster Skin Serum delivers strong value. Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum sits at the luxury level with a 8.4 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: Jack Black Protein Booster Skin Serum or Kate Somerville KateCeuticals® SuperCell Rejuvenation Peptide Serum?
Based on ingredient analysis, Jack Black Protein Booster Skin Serum scores higher overall. See the full score breakdown above for details on each attribute.
Do Jack Black Protein Booster Skin Serum 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 Jack Black Protein Booster Skin Serum 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.