COSRX The 6 Peptide Skin Booster Serum is a light, watery booster serum made with a blend of six peptides, including copper tripeptide-1. It is a gentle daily step for skin that looks tired, rough or less firm, and it layers under almost any routine, so it suits all skin types, including oily and sensitive skin. This COSRX peptide serum is the original from COSRX in 50ml and 150ml, shipped from Seoul with Cash on Delivery.
COSRX 6 Peptide Booster at a glance
| Brand | COSRX |
|---|---|
| Sizes | 50ml · 150ml |
| Product type | Peptide booster serum (light, watery) |
| Key ingredients | A blend of six peptides, including copper tripeptide-1 and acetyl hexapeptide-8 |
| Best for | Skin that looks dull, tired or less firm; early fine lines; all skin types |
| Texture and finish | Thin, fast-absorbing liquid; no heavy or sticky film |
| When to use | Morning and evening, after toner, before thicker serums and moisturiser |
| Sold in Pakistan by | Korean Skincare Pakistan — an Official Authentic seller of COSRX in Pakistan |
Is COSRX 6 Peptide Booster right for your skin?
Best for
- Skin that looks tired, dull or less bouncy and needs a gentle daily step
- Early fine lines, if you want a mild step before or alongside retinol
- Oily and combination skin that prefers light layers to heavy creams
Skip it, or patch-test first, if
- You expect fast, dramatic changes in deep lines: peptides work gradually and gently
- You need a targeted active for acne or dark spots: pair this with a serum made for that goal
How do you use COSRX 6 Peptide Booster?
Morning
- Cleanse and apply toner.
- Press 2–3 drops of the booster into damp skin.
- Follow with moisturiser and a broad-spectrum SPF 50 sunscreen.
Evening
- Double cleanse if you wore sunscreen or makeup.
- Apply the booster, then any active serum such as retinol or niacinamide.
- Seal with a moisturiser such as COSRX Advanced Snail 92 All In One Cream.
Because it is thin, apply it before thicker serums and press it in rather than rubbing. Peptides need steady daily use, so give it at least a couple of months.
What are the key ingredients in COSRX 6 Peptide Booster?
- Copper tripeptide-1 — a copper peptide used in skincare to help skin look firmer and smoother over time
- Acetyl hexapeptide-8 — a peptide often used for the look of expression lines
- Peptide blend (six peptides in total) — the peptides work together on the look of firmness, smoothness and bounce
- Glycerin — a basic humectant that keeps the booster hydrating
How can you tell if your COSRX 6 Peptide Booster is original?
- The serum should be thin and fluid, absorb quickly and have almost no smell; a thick, separated or strongly perfumed liquid is a warning sign.
- The box should be sealed, with the COSRX name, product name and ingredient list printed clearly; blurred printing or spelling mistakes suggest a copy.
- A price far below other trusted sellers usually means old stock or a fake.
- Check the batch code printed on the box and the bottle: the two must match, and the code should look printed, not stuck on. Every unit we sell is batch-code checked on arrival in Seoul, and we verify any code for free — see how to check if Korean skincare is original.
Similar products to consider
- COSRX Advanced Snail 96 Mucin Power Essence
- COSRX The Blue Peptide Bakuchiol Plump Bounce Cream 50ml
- COSRX Hyaluronic Acid Hydra Power Essence 100ml
Related guides and collections
- All COSRX products in Pakistan
- Is Korean Skincare Pakistan an official authentic COSRX seller?
- Best Korean serums and essences in Pakistan
- Peptide and collagen skincare in Pakistan
- Top 5 COSRX products loved in Pakistan
Korean Skincare Pakistan is a Seoul-based authorised seller of major 40+ K-beauty brands. Every product is 100% original, batch-code verified on arrival and shipped from our Seoul warehouse, delivered to your door in 5–7 days nationwide with Cash on Delivery.
COSRX 6 Peptide Booster: frequently asked questions
Is the COSRX The 6 Peptide Skin Booster Serum at Korean Skincare Pakistan original?
Yes. Korean Skincare Pakistan is an Official Authentic seller of COSRX in Pakistan. Our stock is bought from official COSRX channels in Seoul, every unit is batch-code checked on arrival and shipped from our Seoul warehouse. If a product is ever not original, an old batch or near expiry, you can return it free within 7 days.
Does the COSRX 6 Peptide serum contain copper peptide?
Yes. Copper tripeptide-1 is one of the six peptides in the blend, which is why many people find it when they search for a COSRX copper peptide serum. COSRX also makes the Blue Peptide Bakuchiol line, which pairs copper peptide with bakuchiol, if you want a firming step with a retinol alternative.
What does the COSRX 6 Peptide Skin Booster do?
It is a gentle daily step for skin that looks tired, rough or less firm. The peptides help skin look smoother and bouncier with steady use, and the light texture preps skin for the serums and creams that follow. It is not an exfoliant or a spot corrector, so results are gradual rather than dramatic.
Can I use it with retinol, vitamin C or niacinamide?
Yes. Peptides are easy to combine and do not clash with common actives. Apply the booster first because it is the thinnest layer, then vitamin C in the morning or retinol at night, and finish with moisturiser. Wear sunscreen every morning, especially if you also use retinol or acids.
Is it good for oily or acne-prone skin?
Yes, for most oily and acne-prone skin. It is a thin, water-light layer that does not feel heavy in hot weather. It does not unclog pores itself, so pair it with a salicylic acid cleanser if breakouts are your main concern, and patch-test first if your skin is very reactive.
Which size should I buy, 50ml or 150ml?
Both sizes are the same formula. The 50ml bottle is a good first try, and the 150ml bottle suits daily morning and evening use and lasts much longer. The live price and stock of each size are shown right under the Add to Cart button.
