COSRX The 6 Peptide Skin Booster Serum vs Sulwhasoo Overnight Vitalizing Mask
Sulwhasoo Overnight Vitalizing Mask scores 9.0/9.8 vs COSRX The 6 Peptide Skin Booster Serum at 8.5/9.8. Sulwhasoo Overnight Vitalizing Mask wins for active ingredients.
Head to head
The 6 Peptide Skin Booster Serum
Overnight Vitalizing Mask
Score comparison
Sulwhasoo Overnight Vitalizing Mask edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Sulwhasoo WINSIrritation Risk
TIEActive Ingredient Strength
COSRX WINSIngredient Transparency
TIEFormulation Safety
COSRX WINSIngredient face-off
15% overlapOnly in COSRX The 6 Peptide Skin Booster Serum
32 unique
Shared ingredients
8 in common
Only in Sulwhasoo Overnight Vitalizing Mask
44 unique
Why Sulwhasoo Overnight Vitalizing Mask comes out ahead
Where Sulwhasoo Overnight Vitalizing Mask really shines is active ingredient strength, scoring 4.9 compared to COSRX The 6 Peptide Skin Booster Serum's 6.5. Its formula features Camellia Sinensis Leaf Extract, Panax Ginseng Root Extract, and Ophiopogon Japonicus Root Extract in high positions, signalling meaningful concentrations.
Formulation Safety is another area of separation. COSRX The 6 Peptide Skin Booster Serum scores 9.0 here versus 8.0 for Sulwhasoo Overnight Vitalizing Mask. That difference comes down to how each formula is built — the ingredient list tells the story.
Sulwhasoo Overnight Vitalizing Mask brings Camellia Sinensis Leaf Extract, Panax Ginseng Root Extract, and Ophiopogon Japonicus Root Extract 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
Sulwhasoo Overnight Vitalizing Mask 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
Value comparison
At mid-range pricing with a score of 8.5, COSRX The 6 Peptide Skin Booster Serum is a decent pick. Sulwhasoo Overnight Vitalizing Mask sits at the luxury level with a 9.0 score — the higher investment pays off in formulation quality.
Our verdict
Sulwhasoo Overnight Vitalizing Mask 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 Sulwhasoo Overnight Vitalizing Mask?
Based on ingredient analysis, Sulwhasoo Overnight Vitalizing Mask scores higher overall. See the full score breakdown above for details on each attribute.
Do COSRX The 6 Peptide Skin Booster Serum and Sulwhasoo Overnight Vitalizing Mask 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 Sulwhasoo Overnight Vitalizing Mask?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.