COSRX The 6 Peptide Skin Booster Serum
Works for
Evens skin toneNiacinamide, Acetyl glucosamine + 1 moreWorks well
“This water-like formula is infused with six targeted peptides that work together to smooth fine lines, minimize the look of pores, and improve texture and tone for visibly clearer, firmer-looking skin.”
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: acetyl glucosamine, niacinamide
The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually can help even out the skin tone: alanine.
Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.
MoisturizingNiacinamide, Acetyl hexapeptide-8 + 28 moreWorks well
“The toner-like texture absorbs quickly without stickiness, delivering lightweight hydration and preparing skin to better absorb the rest of your routine.”
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
alanine, arginine.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: arginine, glycine soja oil.
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: acetyl glucosamine, acetyl hexapeptide-8, copper tripeptide-1, dipeptide diaminobutyroyl benzylamide diacetate, niacinamide, oligopeptide-68, palmitoyl tripeptide-8
Anti-agingNiacinamide, Acetyl hexapeptide-8 + 9 moreWorks well
“This lightweight, toner-like serum blends six powerful peptides to address fine lines, uneven texture, and loss of firmness.”
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains acetyl glucosamine, adenosine, niacinamide.
These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: acetyl hexapeptide-8, copper tripeptide-1, dipeptide diaminobutyroyl benzylamide diacetate, oligopeptide-68, palmitoyl tripeptide-8, serine, threonine.
Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.
Anti-blemishSide benefit the brand mentions · Niacinamide, AllantoinWorks well
“pore&sebum”
This product can help reduce breakouts and clogged pores because it contains the following ingredient: niacinamide. This ingredient is used for treating acne and can have a noticeable effect.
Can it cause trouble?
Irritancy11 flagged ingredientsMedium risk
Comedogenic1 ingredient rated 2 or more on the 0–5 pore-clogging scale1 flagged
User reviews
5 of 7 community members would buy it again.
This product has helped clear my skin
Its make my skin super dry and tight itchy and red very bad product for sensitive skin
I was really happy with this product when I started using it, but after a few weeks I started to get zits and worse yet super red cheeks. As soon as I stopped using my skin cleared and the redness healed.
Ingredients
Filter by role to see what each ingredient is doing.
Water~40–60%
Dipropylene glycol~5–7.6%
- Irritation risk
- Low
Helps to dissolve other ingredients in a formulation. Slows down the rate of product drying
More about Dipropylene glycolGlycerin~3.4–5%
- Irritation risk
- Low
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
More about GlycerinPentylene glycol~2.7–4%
- Irritation risk
- Medium
Used to preserve products, dissolve other ingredients and create a nice product texture
More about Pentylene glycol1,2-hexanediol~1–1.6%
Niacinamide~1.6–2.5%
- Irritation risk
- Low
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
More about NiacinamideAcetyl hexapeptide-8~1.4–2.1%
- Irritation risk
- Low
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
More about Acetyl hexapeptide-8Copper tripeptide-1~1.2–1.7%
- Irritation risk
- Low
A naturally occurring peptide. One of the most studied peptides in dermatology. It is sometimes abbreviated GHK-Cu. Belongs to the class of carrier peptides. It stimulates both synthesis and breakdown of collagen in skin. It is released in skin wounds and inflammation to support healing. It accelerates wound-healing of the skin and can stimulate hair growth. There are preliminary studies that confirm that copper tripeptide can help support collagen production reducing fine lines and wrinkles and decrease inflammation in skin.
More about Copper tripeptide-1Sh-polypeptide-121~1–1.5%
- Irritation risk
- Low
Dipeptide diaminobutyroyl benzylamide diacetate~0.5–1.15%
- Irritation risk
- Low
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
More about Dipeptide diaminobutyroyl benzylamide diacetateOligopeptide-68~0.4–0.9%
- Irritation risk
- Low
A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles
More about Oligopeptide-68Palmitoyl tripeptide-8~0.2–0.75%
Allantoin~0.05–0.25%
- Irritation risk
- Low
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
More about AllantoinSodium hyaluronate~0.1–0.45%
- Irritation risk
- Low
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
More about Sodium hyaluronateAcetyl glucosamine~0.1–0.4%
- Irritation risk
- Low
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
More about Acetyl glucosamineSerine~0.1–0.4%
- Irritation risk
- Low
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
More about SerineAlanine~0.1–0.4%
- Irritation risk
- Low
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
More about AlanineGlycine~0.1–0.45%
- Irritation risk
- Low
Helps to attract water to the upper layer of the skin and can help restore the skin barrier function
More about GlycineThreonine~0.1–0.45%
- Irritation risk
- Low
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
More about ThreonineArginine~0.1–0.35%
- Irritation risk
- Low
An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin
More about ArginineProline~0.1–0.35%
Betaine~0.05–0.3%
- Irritation risk
- Low
Helps attract water to the upper layer of the skin and improves the product texture
More about BetaineSodium pca~0.05–0.25%
- Irritation risk
- Low
Naturally present in skin and helps to attract water to its upper layer
More about Sodium pcaSodium lactate~0.05–0.25%
- Irritation risk
- Medium
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
More about Sodium lactatePca~0.05–0.25%
- Irritation risk
- Low
Naturally present in skin and helps to attract water to its upper layer
More about PcaGlutamic acid~0.05–0.25%
- Irritation risk
- Low
An amino-acid that helps attract water to the upper layer of the skin
More about Glutamic acidLysine hcl~0.05–0.2%
Tocopherol~0.05–0.25%
- Irritation risk
- Low
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
More about TocopherolDextran~0.05–0.25%
- Irritation risk
- Low
Helps attract water to the most upper layer of the skin. Derived from sugar
More about DextranGlycine soja oil~0.05–0.25%
- Irritation risk
- Medium
- Comedogenicity
- 2/5
A good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.
More about Glycine soja oilHydrogenated lecithin~0.1–0.3%
- Irritation risk
- Low
Helps to retain moisture by creating a protective barrier on the skin. Rich in fatty acids. Improves product texture and helps with the penetration of other ingredients.
More about Hydrogenated lecithinAmmonium acryloyldimethyltaurate/vp copolymer~0.05–0.2%
- Irritation risk
- Low
Increases thickness of a product. Texture enhancer for oil-in-water emulsions
More about Ammonium acryloyldimethyltaurate/vp copolymerPolyacrylate crosspolymer-6~0.05–0.25%
- Irritation risk
- Low
Butylene glycol~0.05–0.2%
- Irritation risk
- Low
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
More about Butylene glycolXanthan gum~0.05–0.25%
- Irritation risk
- Low
Used to create a thicker product consistency
More about Xanthan gumEthylhexylglycerin~0.05–0.25%
Adenosine~0.05–0.3%
- Irritation risk
- Low
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)
More about AdenosinePolyquaternium-51~0.1–0.35%
- Irritation risk
- Low
An emollient that helps create a nice silky finish on the skin
More about Polyquaternium-51Disodium edta~0.05–0.25%
Citric acid~0.05–0.2%
- Irritation risk
- Medium
Can work as an exfoliant but is typically used to adjust the product pH
More about Citric acidCaprylyl glycol~0.1–0.3%
- Irritation risk
- Medium
Helps preserve products and creates a nice product texture
More about Caprylyl glycolT-butyl alcohol~0.05–0.2%
- Irritation risk
- Medium
Used to dissolve other ingredients and to improve smell of products. It could be irritating
More about T-butyl alcoholPotassium sorbate~0.05–0.2%
Sodium oleate~0.2–0.75%
- Irritation risk
- Medium
Helps oil and water mix together and create a thicker product consistency
More about Sodium oleateIngredient list view
Water, Dipropylene glycol, Glycerin, Pentylene glycol, 1,2-hexanediol, Niacinamide, Acetyl hexapeptide-8, Copper tripeptide-1, Sh-polypeptide-121, Dipeptide diaminobutyroyl benzylamide diacetate, Oligopeptide-68, Palmitoyl tripeptide-8, Allantoin, Sodium hyaluronate, Acetyl glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium pca, Sodium lactate, Pca, Glutamic acid, Lysine hcl, Tocopherol, Dextran, Glycine soja oil, Hydrogenated lecithin, Ammonium acryloyldimethyltaurate/vp copolymer, Polyacrylate crosspolymer-6, Butylene glycol, Xanthan gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium edta, Citric acid, Caprylyl glycol, T-butyl alcohol, Potassium sorbate, Sodium oleate
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Worth comparing, line by line.
Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.
| COSRXThe 6 Peptide Skin Booster SerumYOUR PRODUCT | UNPAAtelo Firm Up Ampoule | BANOBAGIMilk Thistle Repair Serum | Coreana LabAmple:N Peptide Shot Ampoule | |
|---|---|---|---|---|
| Match | — | 81% | 78% | 78% |
| Price | $21.00 | $25.40+$4.40 | $18.36−$2.64 | $18.64−$2.36 |
| Shared key ingredients | — | 12 of 23 | 6 of 23 | 7 of 23 |
| Key difference | — | Palmitoyl Pentapeptide-4 | Madecassoside | Acetyl Tetrapeptide-2 |
| Irritancy | Medium | Medium | Low | Low |
| Drying alcohol | — | — | — | — |
| View product | Shop | Shop | Shop |
More alternatives: Mizon 7 Vegan Peptide Booster SerumBoots Ingredients Peptide Serum
Product summary
"COSRX - The 6 Peptide Skin Booster Serum" is effective for: Anti-blemish, Moisturizing, Anti-aging and Evens skin tone
Ingredient callouts
- A good concentration of Niacinamide (1.60% - 2.50%). Niacinamide is a well-studied multi-tasking active. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and improve the skin tone, reducing pigmentation marks.
- Peptides (palmitoyl tripeptide-8 0.05% - 0.25%, oligopeptide-68 0.05% - 0.30%, dipeptide diaminobutyroyl benzylamide diacetate 0.05% - 0.20%, copper tripeptide-1 0.05% - 0.30% and acetyl hexapeptide-8 0.10% - 0.30%). There are many different kind of Peptides and they are naturally present in our skin. They all are a combination of aminoacids. Some of them work as natural antibiotics, promote wound-healing and production of collagen. The science is still not settled on how effective Peptides are in skincare, but it is very likely that they have a benefit. They might help restore the skin barrier and fight the signs of aging. At the very least, Peptides work as humectants: they attract water to the upper layer of the skin and improve its hydration.
- Adenosine 0.20% - 0.75%. It is a compound that in involved in many biological processes inside the skin cells. According one high-quality clinical trial, topical Adenosine in low concentrations can somewhat help improve "deep wrinkles" - the wrinkles that appear with age in places where our faces are most dynamic (for example, on the forehead or in the corners of the eyes).
- Humectants (dextran 0.05% - 0.25%, glutamic acid 0.05% - 0.25%, glycine 0.05% - 0.20%, sodium hyaluronate 0.05% - 0.25%, alanine 0.05% - 0.20%, pca 0.05% - 0.25%, acetyl hexapeptide-8 0.10% - 0.30%, sodium lactate 0.10% - 0.35%, sodium pca 0.10% - 0.45%, betaine 0.10% - 0.40% and glycerin 3.40% - 5.00%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
What our users say
Based on 7 reviews 71% recommend this product- When it comes to comedogenicity, 1 % of the reviewers found that it clogs pores.
- When it comes to using this sunscreen under makeup, two out of three reviewers say that it works well under makeup, but the third user had an issue with pilling.
Price
The product retails for 25.00$ in the United States.
For a detailed price comparison: click here.
Sources cited in this review
Every concentration estimate and effectiveness label is anchored to one of these 24 studies and safety reviews.
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