
COSRX
COSRX The 6 Peptide Skin Booster Serum 150ml





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What if your first serum could do more than just prep?
This 6-peptide booster doesn't wait for other products to work—it starts transforming your skin from the first drop.
COSRX The 6 Peptide Skin Booster Serum is the multifunctional first serum your routine has been missing. Formulated with six advanced peptides, it targets signs of aging, dullness, texture irregularities, and pore visibility in one ultra-light, fast-absorbing step.
At the core: SH-Polypeptide-121, a collagen-supporting peptide that restores skin elasticity and bounce. Copper Tripeptide-1 smooths uneven skin, while Acetyl Hexapeptide-8—nicknamed the “Botox-like peptide”—visibly softens fine lines. To address tone and sensitivity, Oligopeptide-68 brightens, and Palmitoyl Tripeptide-8 calms inflammation. Dipeptide Diaminobutyroyl Benzylamide Diacetate helps reduce sebum and minimize enlarged pores.
This serum isn’t just a prep step—it’s a performance-enhancer. Layer it under your actives or moisturizers to amplify their effects while giving your skin a smoother, firmer, more even base.
Key Benefits
• Firming & Lifting: Peptides help restore elasticity and smooth early signs of aging
• Brightens & Refines: Oligopeptide-68 helps fade discoloration and improve tone
• Pore-Smoothing Power: Targeted peptide support for sebum control and texture refinement
• Soothes & Calms: Anti-inflammatory peptides reduce redness and sensitivity
• Amplifies Skincare Absorption: Preps skin to boost the efficacy of all following products
• Weightless, Watery Texture: Absorbs fast with no stickiness—perfect for layering
Perfect For
• Aging or dull skin needing a multitasking treatment
• Oily or combination skin concerned with pores and uneven texture
• Sensitive skin users who want powerful actives without irritation
• Skincare minimalists who want a serum that does it all
• K-beauty fans upgrading to next-gen peptide technology
SH-Polypeptide-121 – Collagen boosting
Copper Tripeptide-1 – Smoothing & firming
Dipeptide Diaminobutyroyl Benzylamide Diacetate – Pore & oil care
Oligopeptide-68 – Brightening
Palmitoyl Tripeptide-8 – Anti-inflammatory
Acetyl Hexapeptide-8 – Fine line reduction
- When to apply: After cleansing, as your first serum step—AM or PM
How to apply: Dispense 1–2 pumps and gently pat into dry skin
What to follow with: Your favorite serum, ampoule, or moisturizer - Pro tip: Reapply before layering actives to boost absorption and reduce sensitivity
FAQ
This is a serum-grade booster—light in texture but loaded with clinically effective peptides to treat aging, texture, and tone.
Yes. It layers beautifully under everything and enhances the absorption and performance of actives without causing irritation.
A booster is like a primer for your skincare. It preps your skin to absorb the next steps better while delivering its own set of active benefits. Think of it as the power-on button for your routine.
Most serums focus on one concern. This one tackles six—with peptides that lift, brighten, calm, smooth, tighten, and protect—all in one featherlight layer.
Not necessarily. It’s designed to work with your favorite serum, not replace it—though many find they need fewer layers after using this.

Why everyone loves COSRX
Everyone loves COSRX because it captures the heart of Korean skin care—a beauty routine focused on hydration and a flawless complexion. Known for its gentle yet effective products, COSRX is a go-to for all skin types, from dry to oily and sensitive skin.
Their standout products, like the COSRX Advanced Snail 92 All In One Cream, are essential in the K-beauty world, addressing concerns like acne, pores, and anti-aging.
COSRX makes achieving the perfect Korean skin care routine easy and accessible, making it a beloved brand for skincare lovers.