

COSRX
The Vitamin C 13 Serum
Uploaded on 02/18/2023
A gentle vitamin c serum that is suitable on sensitive
skin to use daily! Regular use will fade blemishes, dark spots and freckles and improve overall tone.
COSRX
The RX The Vitamin C 23
Uploaded on 05/26/2022
Effectively targets hyperpigmentation and blemishes caused by sun damage and
acne. Strengthens skin barrier and refines texture to provide radiant, smooth, and even-toned skin.
Ingredients
what‑it‑does | solvent |
Normal (well kind of - it's purified and deionized) water. Usually the main solvent in cosmetic products.
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what‑it‑does | antioxidant | skin brightening | buffering |
Pure Vitamin C. A skincare superstar that is clinically proven to boost collagen production (in 5-20% concentration), fade hyperpigmentation and boost UV protection under sunscreen. Also, it's extremely unstable and hard to formulate.
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what‑it‑does | solvent | moisturizer/humectant |
A natural corn sugar derived glycol. It can be used to improve skin moisturization, as a solvent, to boost preservative efficacy or to influence the sensory properties of the end formula.
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what‑it‑does | emollient |
irritancy, com. | 0, 1 |
A very common silicone that gives both skin and hair a silky smooth feel. It also forms a protective barrier on the skin and fills in fine lines. Also used for scar treatment.
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what‑it‑does | buffering |
It's a little helper ingredient that helps to set the pH of the products to be right. It has an alkaline pH and can neutralize acidic ingredients.
what‑it‑does | soothing | moisturizer/humectant |
irritancy, com. | 0, 0 |
Pro-Vitamin B5 is a goodie that moisturises the skin, has anti-inflammatory, skin protecting and wound healing properties.
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what‑it‑does | antioxidant | skin brightening |
A stable form of Vitamin C, whose strong point is skin-brightening. It might also have antioxidant, anti-inflammatory and collagen boosting abilities.
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what‑it‑does | skin-identical ingredient | emollient |
irritancy, com. | 0, 1 |
An emollient and natural moisturizer that can be found also in the sebum (oily stuff our skin produces). It leaves a nice non-greasy, non-heavy feeling on the skin.
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what‑it‑does | antioxidant | perfuming |
The well-known stimulant from coffee. It has nice antioxidant properties and can improve the microcirculation. Might be helpful for dark circles, puffy eyes, as well as cellulite and hair loss.
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what‑it‑does | viscosity controlling |
Sodium chloride is the fancy name of salt. Normal, everyday table salt.
If (similar to us) you are in the weird habit of reading the label on your shower gel while taking a shower, you might have noticed that sodium chloride is almost always on the ingredient list.
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what‑it‑does | skin-identical ingredient | moisturizer/humectant |
irritancy, com. | 0, 0 |
It's the salt form of famous humectant and natural moisturizing factor, hyaluronic acid. It can bind huge amounts of water and it's pretty much the current IT-moisturizer.
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what‑it‑does | preservative |
what‑it‑does | chelating |
Super common little helper ingredient that helps products to remain nice and stable for a longer time. It does so by neutralizing the metal ions in the formula (that usually get into there from water) that would otherwise cause some not so nice changes.
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what‑it‑does | cell-communicating ingredient |
An important compound in our body that has a vital cell-signalling role. It is wound healing, anti-inflammatory and can help with barrier repair.
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what‑it‑does | skin-identical ingredient | skin brightening |
An amino sugar that helps the skin to stay hydrated, is also promising against wrinkles and can help to fade brown spots particularly when combined with niacinamide.
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what‑it‑does | soothing |
irritancy, com. | 0, 0 |
Super common soothing ingredient. It can be found naturally in the roots & leaves of the comfrey plant, but more often than not what's in the cosmetic products is produced synthetically. It's not only soothing but it'
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what‑it‑does | viscosity controlling | moisturizer/humectant |
A little helper ingredient that can be a thickener, a humectant, a foam booster, an adhesion promoter and a filler.
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what‑it‑does | antioxidant |
irritancy, com. | 0-3, 0-3 |
Pure Vitamin E. Great antioxidant that gives significant photoprotection against UVB rays. Works in synergy with Vitamin C.
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what‑it‑does | emollient |
what‑it‑does | moisturizer/humectant | solvent |
irritancy, com. | 0, 1 |
An often used glycol that works as a solvent, humectant, penetration enhancer and also gives a good slip to the products.
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what‑it‑does | skin-identical ingredient |
An amino acid that is one of the primary building blocks of hair keratin and skin collagen. It's a natural moisturizing factor and might also help to speed up wound healing.
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what‑it‑does | cell-communicating ingredient | skin brightening | anti-acne | moisturizer/humectant |
A multi-functional skincare superstar that has clinically proven anti-aging, skin lightening, anti-inflammatory and barrier repair properties.
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what‑it‑does | solvent | moisturizer/humectant |
A multi-functional, silky feeling helper ingredient that can do quite many things. It's used as an emulsion stabilizer, solvent, and a broad spectrum antimicrobial.
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what‑it‑does | antimicrobial/antibacterial | solvent | viscosity controlling |
Alcohol with some additives to make it unconsumable. It is great solvent, penetration enhancer, creates cosmetically elegant, light formulas, great astringent, and antimicrobial. In large amounts, it can be very drying to the skin.
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what‑it‑does | emollient |
irritancy, com. | 0, 0 |
Sunflower Oil - it's a great emollient that protects & enhances the skin barrier.
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what‑it‑does | soothing | skin brightening |
You might know licorice as a sweet treat from your childhood, but it's actually a legume that grows around the Mediterranean Sea, the Middle East, central and southern Russia.
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what‑it‑does | solvent |
A light, volatile silicone that's similar to commonly used Cyclopentasiloxane but it dries even faster when applied to the skin.
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what‑it‑does | antioxidant | emollient |
irritancy, com. | 0, 0-2 |
Safflower Seed Oil - emollient plant oil with moisturizing fatty acids (linoleic: 70%, oleic: 11%) and antioxidant vitamin E (44mg/100g alpha-tocopherol).
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what‑it‑does | emollient |
what‑it‑does | antioxidant | emollient |
The oil-soluble extract coming from the edible, orange part of the carrot. It is created by macerating the carrot root in a carrier oil such as sunflower or olive oil, and the resulting thing (base oil + carrot root extract) is often called carrot oil or carrot root oil.
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what‑it‑does | solvent |
A clear, colorless liquid that works as a solvent and viscosity decreasing ingredient. It also has great skin-moisturizing abilities.
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