COSRX The 6 Peptide Skin Booster Serum vs StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum scores 9.2/9.8 vs COSRX The 6 Peptide Skin Booster Serum at 8.5/9.8. StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum wins for hydration.
Head to head
The 6 Peptide Skin Booster Serum
Super-C Retinol Brighten & Correct Vitamin C Serum
Score comparison
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
COSRX WINSIrritation Risk
TIEActive Ingredient Strength
StriVectin WINSIngredient Transparency
COSRX WINSFormulation Safety
TIEIngredient face-off
19% overlapOnly in COSRX The 6 Peptide Skin Booster Serum
32 unique
Shared ingredients
8 in common
Only in StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum
34 unique
Why StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum comes out ahead
Where StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum really shines is hydration efficacy, scoring 5.8 compared to COSRX The 6 Peptide Skin Booster Serum's 9.2. With Pentylene Glycol, Dipropylene Glycol, and Glycerin in its top ingredients, StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum delivers stronger moisture-binding capability.
Active Ingredient Strength is another area of separation. StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum scores 9.7 here versus 6.5 for COSRX The 6 Peptide Skin Booster Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum brings Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, and Ascorbic Acid 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
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Targeting specific concerns like aging or uneven tone — Sodium Ascorbyl Phosphate does the heavy lifting
- 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. StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum sits at the premium level with a 9.2 score — the higher investment pays off in formulation quality.
Our verdict
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum 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 StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum?
Based on ingredient analysis, StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum scores higher overall. See the full score breakdown above for details on each attribute.
Do COSRX The 6 Peptide Skin Booster Serum and StriVectin Super-C Retinol Brighten & Correct Vitamin C 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 COSRX The 6 Peptide Skin Booster Serum and StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.