Piboo
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COSRX The 6 Peptide Skin Booster Serum

Ingredients and claims, checked

Last checked September 9, 2026

Buy on Olive Young US
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What is it like at a glance?

What the ingredients do

Hydration leads, with 7 of 44 ingredients. It also contains Niacinamide.

Hydration
7
Brightening
1
Wrinkle improvement
1
Exfoliation
1

By skin type

  • DryUse with care
  • OilyGood fit
  • SensitiveGood fit

Piboo’s rating from user reports.

Worth knowing

  • On pore-clogging lists

Made for

What is this product?

What to expect
This serum is registered in Korea as a functional cosmetic for brightening and wrinkle improvement.
Key ingredients
Niacinamide, Adenosine, SH-polypeptide-121
When
Morning and evening

It comes in a 150 ml size.

Who is it for?

Good for

  • People avoiding fragrance

What's good, and what to watch for?

Good points

  • Registered as a brightening and wrinkle-care functional cosmetic

Watch-outs

  • If you clog easily: Glycine Soja (Soybean) Oil

How do you use it?

Where in your routine
First treatment step after cleansing or toner, as a booster before other serums
Pairs well with
  • A targeted serum applied immediately after
  • A moisturiser or cream applied last
  • Daily broad-spectrum sunscreen

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Tap a name to read about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary, except 4 with no dictionary entry, left in Korean.

Worth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

What the claims add up to

You can expect:
less visible dark spots · softer-looking fine lines
See each claim, checked (4)

Claims, checked

  • Wrinkle improvement / whitening functional productbacked by evidence
  • The 6 Peptide Skin Booster Serumpartly backed
  • A first-step booster serum that restores the skin's natural transparencypartly backed
  • Low-irritation skincare for sensitive skin, 56 wins at global beauty awardsno supporting source found

We quote each claim exactly as the brand published it, then check it against the ingredient list and the brand's own documents.

How we check claims

What else is worth seeing?

Products we read alongside this one.