COSRX The 6 Peptide Skin Booster Serum 150ml
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from South Korea
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Lightweight, Multi-Peptide Booster to Firm, Brighten & Balance Skin
The COSRX The 6 Peptide Skin Booster Serum is a K-beauty ultra-light prep serum loaded with six powerful peptides — like SH-Polypeptide-121, Copper Tripeptide-1, and Acetyl Hexapeptide-8 — that target key skin needs such as pores, sebum control, firmness, fine lines, texture, tone and calming.
Its watery, non-sticky texture layers beautifully under other products, serving as an essential first step to boost your routine's effectiveness and support healthy, youthful-looking skin. Suitable for all skin types, including sensitive, it delivers daily nourishment and anti-aging benefits without heaviness or stickiness.
✨ Why You’ll Love It:
- 6 Peptides — Improves elasticity, smooths fine lines, and strengthens skin barrier
- Skin-Boosting Formula — Preps skin for better absorption of serums & creams
- Pore-Refining & Smoothing — Improves skin texture for a youthful glow
- Lightweight, watery texture — Fast-absorbing, non-sticky finish

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First Step Booster
Awaken skin functions and enhances skincare routine
Key Ingredients
6 Peptides
•
SH-Polypeptide-121
Collagen Boosting & Plumping
•
Copper Tripeptide-1
Retexturize
•
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Excess Sebum & Pore Care
•
Oligopeptide-68
Brightening
•
Palmitoyl Tripeptide-8
Soothe & Reduce Skin Sensitivity
•
Acetyl Hexapeptide-8
Smooth Fine Lines & Firmness
FREQUENTLY ASKED QUESTIONS
How is this different from other COSRX serums?
Unlike targeted serums (e.g., Snail Essence or Vitamin C Serum), this one is a multi-functional peptide booster that preps and strengthens the skin for all treatments.
Can I use it with other COSRX products?
Yes. It layers well with popular COSRX products like the Snail 96 Essence, Vitamin C 23 Serum, or Advanced Retinol.
Is this serum suitable for sensitive skin?
Yes. It has a gentle, watery texture free from heavy oils and fragrances, making it suitable for sensitive and acne-prone skin.
Where This Fits In Your Routine
Use products in the right order for best results
STEP 7: SUN CARE
Protects skin from UV damage, dark spots, and premature aging.
The most important step for maintaining results long-term.
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STEP 1: CLEANSING
Removes oil, sunscreen, makeup & daily buildup.
Clean skin helps the rest of your routine absorb better.
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EXTRA STEP: EXFOLIATE
Removes dead skin cells to improve texture and help products absorb better.
Use only a few times per week. (1-3X WEEKLY)
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STEP 2: TONING
Rehydrates skin after cleansing and balances moisture levels.
Preps your skin so serums can work more effectively.
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STEP 3: SERUMS
Concentrated treatments that target specific concerns.
Great for acne, dark spots, dullness, fine lines & barrier repair.
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STEP 4: EYE CARE
Designed for the delicate under-eye area.
Helps with dryness, puffiness, dark circles & fine lines.
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STEP 5: MOISTURIZERS
Locks in hydration and strengthens your skin barrier.
Keeps skin soft, bouncy, and protected throughout the day or night.
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STEP 6: MASKS
An extra treatment step used a few times a week.
Boosts glow, clams irritation, or deeply hydrates tried skin.
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Complete Your Routine
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