COSRX The 6 Peptide Skin Booster Serum vs numbuzin No. 9 NAD Bio Lifting-sil Essence
numbuzin No. 9 NAD Bio Lifting-sil Essence scores 8.9/9.8 vs COSRX The 6 Peptide Skin Booster Serum at 8.5/9.8. numbuzin No. 9 NAD Bio Lifting-sil Essence wins for active ingredients.
Head to head
The 6 Peptide Skin Booster Serum
No. 9 NAD Bio Lifting-sil Essence
Score comparison
numbuzin No. 9 NAD Bio Lifting-sil Essence edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
numbuzin WINSIrritation Risk
TIEActive Ingredient Strength
numbuzin WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
25% overlapOnly in COSRX The 6 Peptide Skin Booster Serum
21 unique
Shared ingredients
19 in common
Only in numbuzin No. 9 NAD Bio Lifting-sil Essence
57 unique
Why numbuzin No. 9 NAD Bio Lifting-sil Essence comes out ahead
Where numbuzin No. 9 NAD Bio Lifting-sil Essence really shines is active ingredient strength, scoring 9.0 compared to COSRX The 6 Peptide Skin Booster Serum's 6.5. Its formula features Niacinamide, Adenosine, and Tocopherol in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. numbuzin No. 9 NAD Bio Lifting-sil Essence scores 9.8 here versus 9.2 for COSRX The 6 Peptide Skin Booster Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
numbuzin No. 9 NAD Bio Lifting-sil Essence brings Niacinamide, Adenosine, and Tocopherol as actives, while cOSRX The 6 Peptide Skin Booster Serum relies on Niacinamide, Acetyl Hexapeptide-8, and Dipeptide Diaminobutyroyl Benzylamide Diacetate. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
COSRX The 6 Peptide Skin Booster 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
numbuzin No. 9 NAD Bio Lifting-sil Essence is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- Targeting specific concerns like aging or uneven tone — Niacinamide does the heavy lifting
Value comparison
Both sit in the mid-range bracket, so value comes down to formulation quality. numbuzin No. 9 NAD Bio Lifting-sil Essence gets the nod here with its 8.9 overall score — you're getting more for a similar outlay.
Our verdict
numbuzin No. 9 NAD Bio Lifting-sil Essence edges ahead with a slightly stronger formulation, but COSRX The 6 Peptide Skin Booster Serum is still a solid pick.
Frequently asked questions
Which is better: COSRX The 6 Peptide Skin Booster Serum or numbuzin No. 9 NAD Bio Lifting-sil Essence?
Based on ingredient analysis, numbuzin No. 9 NAD Bio Lifting-sil Essence scores higher overall. See the full score breakdown above for details on each attribute.
Do COSRX The 6 Peptide Skin Booster Serum and numbuzin No. 9 NAD Bio Lifting-sil Essence share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between COSRX The 6 Peptide Skin Booster Serum and numbuzin No. 9 NAD Bio Lifting-sil Essence?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.