#COSRXDermSerum #VitaDermSerum #AcneDermSerum #DewyDermSerum


COSRX has announced that newly launched The RX - highly concentrated serums called ‘The Vitamin C 23 Serum’, ‘The Niacinamide 15 Serum’, ‘The Hyaluronic Acid 3 Serum’ were sold out within 24 hours.

The research backed “highly concentrated 3 different types of serums” were launched on 30th May 00:00 (PST) on COSRX official website and sold out within 24 hours of its release. The RX is likely to be re-stocked and readily available in June and during the summer months.



No one can deny that our skin needs a lot of help in the form of products to achieve optimum healthy skin. Between grimy trips on the underground, too much caffeine and central air conditioning, we can do a lot of damage to our skin during the average workday.

But we can mitigate that through the help of a research backed 'highly concentrated serums' formulated with the optimal combination of active ingredients tailored to solve skin concerns.

The serums are a product of detailed analysis of consumer reviews and have been formulated with a maximum concentration of active ingredients paired with synergistic components that provide a comprehensive skincare solution.



The Vitamin C 23 Serum


-Size : 20ml/ 0.67 fl.oz. / Retail Price : 25 USD

The abundant consumer reviews on vitamin C demonstrate that its unique irritating and stinging sensation have led to many with sensitive skin having to stop its use.

In response to this, COSRX, the hypoallergenic brand for sensitive skin poured through research papers, carrying out study upon study to finally develop a concentrated vitamin C serum with maximum effectiveness and minimum irritation.

The Vitamin C 23 Serum is formulated with 23% pure vitamin C that fades acne scars and brightens dull, tired skin. It also improves uneven skin tone leaving the complexion clear and healthy.

Highly concentrated vitamin C serums are notoriously difficult to manufacture as they are susceptible to oxidation caused by external conditions and are prone to exploding due to internal gas generation. To prevent this, COSRX developed a specialized method that allows the container to expel gas whilst blocking the inward flow of oxygen to safely house the highly concentrated pure vitamin C formula. The serum also boasts a double-layer structure with an oil layer on top to maintain freshness and delay oxidation. COSRX claims that “We ensure a stable formula, with minimum irritation but maximum efficacy of vitamin C!”



The Niacinamide 15 Serum

-Size : 20ml/ 0.67 fl.oz. / Retail Price : 25 USD

Research has shown us that most niacinamide serums on the market claim to brighten complexion and hyperpigmentation. However, detailed analysis of consumer reviews has shown us that people are more impressed by its "effect on acne" rather than brightening.

For this reason, COSRX started research based on real consumer reviews that niacinamide is effective on acne. After running countless formulations, a "total acne care" serum has been developed with optimal combination of synergistic ingredients such as N-acetylglucosamine, zinc PCA and allantoin. These work together to target acne at all stages, from cause to resolution, exfoliating, soothing and clearing post acne marks for complete acne domination!



The Hyaluronic Acid 3 Serum

-Size : 20ml/ 0.67 fl.oz.Retail Price : 25 USD

Irrespective of the product used, hydration is the most fundamental and important benefit consumers expect from their skincare. However, most over-the-counter formulations have a hyaluronic acid concentration of 2% or less.

So, to resolve concerns regarding moisturizing and ensure constant hydration, COSRX created a high intensity serum that offers a high-level concentration of 3% hyaluronic acid.

Hyaluronic acid is an active ingredient capable of absorbing up to 1,000 times its weight in water to provide intense, skin plumping hydration. Combined with NMF and ceramide, it also builds up the skin barrier preventing the loss of hydration. As a plus, the high strength but gentle ingredients make it the perfect go-to for all skin types and skincare combinations!


-Editor : Heyin Lee-

May 31, 2022 — cosrx inc