COSRX The 6 Peptide Skin Booster Serum pump bottle surrounded by a splash of water.

Kauve&Co.

COSRX The 6 Peptide Skin Booster Serum — 150ml

R 549.00
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Product details

One lightweight step. Six peptides. A whole lot of versatility.

COSRX The 6 Peptide Skin Booster Serum is a watery first-step serum designed to prep your skin while supporting hydration, texture, firmness and a brighter, smoother-looking complexion.

Its six-peptide complex is paired with niacinamide, adenosine, hyaluronic acid and moisture-supporting ingredients, creating an easy-to-layer base for the rest of your skincare.

Why you'll love it

🧬 Six-peptide complex
💧 Lightweight hydration
✨ Supports smoother, brighter-looking skin
♡ Helps support firmness and elasticity
☁️ Watery, quick-absorbing texture
🔄 Designed to layer underneath your other treatments

SIZE 150ml
BEST FOR Dull-looking • Uneven texture • Dehydrated • Firmness-focused routines • All skin types
How to use +


After cleansing, apply 2–3 pumps evenly over the face and gently pat until absorbed. Use as the first skincare step before your essence, ampoule or treatment serum. Follow with moisturiser and SPF during your morning routine.

Routine order +
Cleanse → 6 Peptide Skin Booster → Essence/Serum → Moisturise → SPF (AM)
Key ingredients +

6 Peptide Complex — a combination of six peptides selected to support multiple concerns including texture, firmness and overall skin appearance.

Niacinamide — helps support a brighter, more even-looking complexion.

Adenosine — supports smoother-looking skin and elasticity.

Sodium Hyaluronate — helps attract and retain moisture for hydrated, plumper-feeling skin.

Natural Moisturising Factors — moisture-supporting components that help maintain hydration and support the skin barrier.

The Kauve Edit +

Why we picked it: Most peptide products feel like another treatment you have to squeeze into an already crowded routine. This one makes more sense as a lightweight first layer — giving you peptides and hydration while still leaving plenty of room for whatever serum you're targeting your main concern with.

Kauve tip: Think of this as your prep serum, not necessarily your only serum. Apply it straight after cleansing, let it absorb, then layer your targeted serum or ampoule over it.