COSRX

The 6 Peptide Skin Booster Serum

132 Reviews

• 히알루로닉87

  Jun 5, 2025 (UTC)
  Combination SkinSensitive Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  Like most toners, it has a suitably thin consistency that absorbs into the skin over time.

  Cons

  If you use this when your skin barrier is compromised, you may experience a tingling sensation. In that case, refrain from using it and focus on repairing your skin barrier with panthenol and ceramide products before trying again.

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• 라희22

  Jun 4, 2025 (UTC)
  수부지Sensitive Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  As someone with super sensitive skin, I was afraid to use functional products, but this one was actually okay!

  Cons

  When my skin barrier was compromised, using this made my skin feel tingly and painful.

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• 유연한털배벌새39501

  May 16, 2025 (UTC)
  Combination SkinSensitive Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  After just a few days of use, the improvement in skin tone and texture is visually noticeable.

  Cons

  Too frequent use can actually make the skin rough and irritated.

  Tip

  I use it as a night care product only once every two or three days, not daily.

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• 도지지지

  May 16, 2025 (UTC)
  Dry SkinAcne Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  The product applies smoothly and my skin feels refreshed and improved.

  Cons

  When applied, it feels stinging and I'm not sure if it suits my skin well.

  • 

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• 조랭이씨

  May 15, 2025 (UTC)
  Combination Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  Convenient pumping container Not a completely flowing liquid formulation Fragrance-free Refreshing Slightly coated, smooth feel on the face

  Cons

  It stings! There is no visible irritation, but the stinging sensation is not pleasant 🥹 (I think this is because I exfoliated separately)

  Tip

  It seems suitable for use regardless of gender. If you have sensitive skin, it's probably best not to do additional peeling.

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• 나미끄

  Apr 18, 2025 (UTC)
  수부지Sensitive SkinAcne Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  It doesn't feel like it's causing deep dryness. The pump works well, and as soon as you apply it, you don't really notice any dryness. It feels like a first essence that you use before your toner!

  Cons

  If your skin is super sensitive or in a compromised state, it can feel a bit tingly when applied, almost like a burning sensation. However, this is likely due to having sensitive, delicate skin. When my skin is in a healthy condition, I don't experience any irritation at all.

  Tip

  Use it every day. I recommend it for daily use. My mom uses it too, and I suggest sharing it with others around you.

  • 

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• 심플한갈기호저88633

  Apr 7, 2025 (UTC)
  Dry Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  Great for dry skin! The lightweight formula feels hydrating, though it can run a bit when applied.

  Cons

  There's a slight tingling sensation, but everything else about it is fantastic!

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• 피부신델렐라

  Apr 5, 2025 (UTC)
  Dry SkinSensitive Skinproduct.Atopy Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  I bought this product after hearing that using peptides as a first step boosts absorption of other skincare products. As rumored, using it like a first essence made my skin feel more hydrated. Apparently, this is because peptides act as signaling molecules. The volume and price are great - you can use it generously. Some people even say their skin glows after layering it up to 5 times in their skincare routine!

  Cons

  As mentioned, I definitely noticed increased absorption when using this as the first step. However, I felt a tingling sensation when layering it 3 times. I've never experienced this with other peptide products before. One layer is fine with average absorption. Two layers seem to improve absorption a bit. With three layers, absorption seems better but the tingling starts, which made me hesitant to continue use. This wasn't immediate - I noticed it after 1-2 weeks. While it didn't cause acne or hard inflammations, the tingling could potentially trigger melanin production and darken skin tone over time. Using it just once doesn't cause tingling, but the layering issue makes me wary of daily use. I'm puzzled why this particular peptide product causes tingling when layered, unlike others.

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• 졸린나는퉁퉁이

  Apr 4, 2025 (UTC)
  Combination SkinAcne Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  Even though I've only used it for a few days and can't see major results yet, I notice less deep dryness in my skin

  Cons

  It stings a bit at first, and I can feel the tingling sensation even when I apply a lot

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• oooks

  Apr 2, 2025 (UTC)
  수부지Sensitive SkinAcne Skin

  Review under verification

  The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.

  OK

  Reviewed by The Hwahae Testers

  This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.

  OK
  Pros

  I'm on my third bottle now. When I apply it right after cleansing, I can feel my skin texture becoming more refined, and my complexion seems to brighten up.

  Cons

  Occasionally, when my skin isn't in the best condition or after I've squeezed a pimple, it can sting a bit when applied.