COSRX The 6 Peptide Skin Booster Serum vs Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief
Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief scores 9.0/9.8 vs COSRX The 6 Peptide Skin Booster Serum at 8.5/9.8. Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief wins for active ingredients.
Head to head
The 6 Peptide Skin Booster Serum
Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief
Score comparison
Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
Rejuran WINSIrritation Risk
TIEActive Ingredient Strength
COSRX WINSIngredient Transparency
COSRX WINSFormulation Safety
TIEIngredient face-off
45% overlapOnly in COSRX The 6 Peptide Skin Booster Serum
20 unique
Shared ingredients
20 in common
Only in Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief
24 unique
Why Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief comes out ahead
Where Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief really shines is active ingredient strength, scoring 5.3 compared to COSRX The 6 Peptide Skin Booster Serum's 6.5. Its formula features Niacinamide, Avena Sativa (Oat) Kernel Extract, and Cucumis Sativus (Cucumber) Fruit Extract in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief 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.
Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief brings Niacinamide, Avena Sativa (Oat) Kernel Extract, and Cucumis Sativus (Cucumber) Fruit 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
Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief 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
Both sit in the mid-range bracket, so value comes down to formulation quality. Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief gets the nod here with its 9.0 overall score — you're getting more for a similar outlay.
Our verdict
Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief 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 Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief?
Based on ingredient analysis, Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief scores higher overall. See the full score breakdown above for details on each attribute.
Do COSRX The 6 Peptide Skin Booster Serum and Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief 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 Rejuran Moisture Treatment Mask c-PDRN® for Hydration & Redness Relief?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.