Works for:
based on ingredients and %- Moisturizing
- Exfoliation
- Anti-aging
- Anti-blemish
Can it cause trouble?
- Irritation risk: high
- Comedogenic risk ingredients: 0
Key actives
Product Summary
"COSRX - AHA/BHA Refresh Vitamin C Booster Serum" is effective for: Moisturizing, Exfoliation, Anti-blemish, Evens skin tone and Anti-aging
Ingredient callouts
- A good concentration of Niacinamide (2.70% - 4.00%). 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.
- This product contains acids (glycolic acid 1.40% - 2.20%). Their concentration is low, and they will not have a strong exfoliating effect. Instead, they work to support the skin natural acid mantle and to attract water (as humectants).
- Adenosine 0.20% - 0.75%. It is a chemical present inside our skin cells. A clinical trial confirmed that topical application of Adenosine in a low concentration can reduce dynamic wrinkles (these are the wrinkles that appear with age in a places where our mimic is the most active, for example, in the corners of the eyes or on the forehead).
- Panthenol (pro-vitamin B5) at about 0.55% - 1.35% concentration. In this concentration, Panthenol works effectively to improve the skin barrier and reduce inflammation.
- Humectants (sodium hyaluronate 0.30% - 0.75%, panthenol 0.55% - 1.35%, glycerin 0.45% - 1.00% and betaine 1.20% - 1.80%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails from 25.00$ up to 30.69$ in the United States.
For a detailed price comparison: click here.
Anti-aging
What does the product description say?
Infused with naturally-derived exfoliators and 57% Golden-Rx Complex, this lightweight and dermatologically tested serum diminishes the appearance of fine lines and brightens the complexion.
Source: Soko Glam
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains adenosine, glycolic acid, niacinamide.
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.
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
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
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)
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Anti-blemish
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.
In addition, this product contains betaine salicylate. It can help in reducing blemishes, even though it is less effective.
The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: glycolic acid
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
Exfoliating acid, a "relative" of salicylic acid
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
Evens skin tone
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: alpha-arbutin, betaine salicylate, glycolic acid, niacinamide
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.
Might help reduce hyperpigmentation when used regularly over a long period of time. Is more effective than beta-arbutin
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
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
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Exfoliation
What does the product description say?
Extract from the peels of gold kiwis controls sebum production and remove dead skin cells while dragon fruit extract revitalizes skin.
Source: Yesstyle
This product can help exfoliate the skin. In other words, it helps break down the bonds between dead cells on the surface of the skin and speed up the skin turnover. Skin often appears softer and brighter after exfoliation, but overdoing it can result in disrupted skin barrier. The following ingredient is doing the exfoliating job in this product: betaine salicylate, glycolic acid.
Exfoliating acid, a "relative" of salicylic acid
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
Moisturizing
What does the product description say?
Watery and Absorbant Texture Hydrating and soft serum insta...
Source: Cosrx
This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": betaine, glycerin.
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. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide, panthenol
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
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
Helps attract water to the upper layer of the skin and can help improve skin barrier function
Helps attract water to the upper layer of the skin and improves the product texture
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)
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
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Exfoliation | |
| Moisturizing |
Total Promises Fulfilled score: 100/100.
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Potential irritants
Comedogenic ingredients
No comedogenic ingredients detected
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| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 COSRX AHA/BHA Refresh Vitamin C Booster Serum | Current | $25.00 | |
 numbuzin Buy Numbuzin No.5 Vitamin Concentrated Serum Australia - Korean Skin Care and Cosmetics | 87% | $21.95 | |
JUMISO All Day Vitamin VC-IP 1.0 Firming Serum | 85% | $16.47 | |
MEDI-PEEL AHA BHA Alpha Arbutin Ampoule | 85% | - | |
 Dr. Althea Buy Dr. Althea Vitamin C Boosting Serum in Australia - Korean Skincare and Cosmetics | 85% | $24.95 | |
 Medicube Buy Medicube Kojic Acid Turmeric Vita Jelly Mist Serum in Australia - Korean Skincare Online | 84% | $31.08 |
Key Actives
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
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Helps attract water to the upper layer of the skin and can help improve skin barrier function
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)
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Exfoliating acid, a "relative" of salicylic acid
Helps attract water to the upper layer of the skin and improves the product texture
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
Might help reduce hyperpigmentation when used regularly over a long period of time. Is more effective than beta-arbutin
Potential irritants
A plant extract that might have some anti-oxidant properties, but evidence of effectiveness in skin is lacking
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
A plant oil with a high content of volatile compounds that can irritate the skin and lead to allergic reactions. Can lead to photosensitivity
A plant-infused water. The concentration of compounds with potential skin benefits is unlikely to be effective
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Might help reduce hyperpigmentation when used regularly over a long period of time. Is more effective than beta-arbutin
Comedogenic ingredients
We couldn't find any comedogenic ingredients in this product
All ingredients
A plant extract that might have some anti-oxidant properties, but evidence of effectiveness in skin is lacking
A plant-infused water. The concentration of compounds with potential skin benefits is unlikely to be effective
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
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
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Helps attract water to the upper layer of the skin and improves the product texture
Helps attract water to the upper layer of the skin and can help improve skin barrier function
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
Used to thicken product formulations and create gel-like textures
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
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)
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
A plant oil with a high content of volatile compounds that can irritate the skin and lead to allergic reactions. Can lead to photosensitivity
Might help reduce hyperpigmentation when used regularly over a long period of time. Is more effective than beta-arbutin
Ingredient list view
Actinidia chinensis fruit extract, Hylocereus undatus fruit extract, Hippophae rhamnoides water, Butylene glycol, Niacinamide, 1,2-hexanediol, Glycolic acid, Betaine, Sodium hydroxide, Water, Panthenol, Allantoin, Hydroxyethylcellulose, Glycerin, Polyglyceryl-10 myristate, Polyglyceryl-10 laurate, Sodium hyaluronate, Adenosine, Ascorbyl glucoside, Betaine salicylate, Limonene, Citrus aurantium bergamia fruit oil, Alpha-arbutin, Linalool, Menthyl lactate, Mentha haplocalix extract
- Niacinamide - mechanisms of action and its topical use in dermatology
- Gehring, W. (2004). Nicotinic acid/niacinamide and the skin. Journal of Cosmetic Dermatology, 3(2), 88–93. doi:10.1111/j.1473-2130.2004.00115.x
- The influence of alkane chain length on the skin irritation potential of 1,2-alkanediols
- Photoprotective and antiinflammatory effects of topical glycolic acid
- Glycolic acid peel therapy – a current review
- Dual Effects of Alpha-Hydroxy Acids on the Skin
- Skin moisturizing effects of panthenol-based formulations
- Safety Assessment of Panthenol, Pantothenic Acid, and Derivatives as Used in Cosmetics
- Profile of wound healing process induced by allantoin
- Glycerol and the skin: holistic approach to its origin and functions
- In Vitro Assessment of Skin Irritation Potential of Surfactant-based Formulations by Using a 3-D Skin Reconstructed Tissue Model and Cytokine Response
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Evaluation of anti-wrinkle efficacy of adenosine-containing products using the FOITS technique
- The Roles of Vitamin C in Skin Health
- Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives
- Safety Assessment of Citrus-Derived Peel Oils as Used in Cosmetics
- Oxidized citrus oil (R-limonene): A frequent skin sensitizer in Europe
- Air oxidation increases skin irritation from fragrance terpenes