Jack Black Protein Booster Skin Serum vs medicube Deep Vita A Retinol Serum
Jack Black Protein Booster Skin Serum scores 8.5/9.8 and medicube Deep Vita A Retinol Serum scores 8.6/9.8 — a near-tie where your skin type decides the winner.
Head to head
Protein Booster Skin Serum
Deep Vita A Retinol Serum
Score comparison
These two are neck and neck — just 0.1 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
medicube WINSIrritation Risk
TIEActive Ingredient Strength
medicube WINSIngredient Transparency
medicube WINSFormulation Safety
TIEIngredient face-off
15% overlapOnly in Jack Black Protein Booster Skin Serum
21 unique
Shared ingredients
8 in common
Only in medicube Deep Vita A Retinol Serum
45 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.
Active Ingredient Strength is another area of separation. medicube Deep Vita A Retinol Serum scores 6.7 here versus 5.3 for Jack Black Protein Booster Skin Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
medicube Deep Vita A Retinol Serum brings Niacinamide, Allantoin, and Dipotassium Glycyrrhizate as actives, while jack Black Protein Booster Skin Serum relies on Camellia Sinensis Leaf Extract, Dipeptide Diaminobutyroyl Benzylamide Diacetate, and Retinyl Palmitate. 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
medicube Deep Vita A Retinol Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Dipropylene Glycol
- Anyone who prefers clean, well-vetted formulations
Value comparison
Jack Black Protein Booster Skin Serum comes in at premium pricing with a 8.5 score, which is solid value at that tier.
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 medicube Deep Vita A Retinol Serum?
Based on ingredient analysis, medicube Deep Vita A Retinol Serum scores higher overall. See the full score breakdown above for details on each attribute.
Do Jack Black Protein Booster Skin Serum and medicube Deep Vita A Retinol 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 medicube Deep Vita A Retinol Serum?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.