COSRX The Hyaluronic Acid 3 Serum 20ml


High strength formula infused with 3% hyaluronic acid
Highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.
Feel the benefits of Hyaluronic Acid without irritation.
(*Based on clinical trials- 30 subjects completed the test.)

Clinical Results
- immediately increases the moisture content of the external skin (external moisture) 223.95%
- immediately Increases internal skin moisture content (internal moisture) 16.35% 

- Infuses hydration
- Strengthens skin barrier 
- Retains moisture
- Plumps skin
- Provides hydrating glow to complexion

- Dry, dehydrated skin
- Flaky skin
- Experience makeup clumping and clinging to dry patches
- Looking for a high-efficacy serum to lock in moisture

How to use

After cleansing, during the serum phase, apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the center of the face working towards the edges.

* Can be used morning and/or evening.



  • Brand : COSRX
  • Capacity : 20ml
  • Target Area : Face
  • Skin Type : All Skin Types
  • Condition : 100% Brand-new with original box
  • Country of origin : Republic of Korea

Citation Image Copyright Statement

All images featured on this website are either sourced from the respective brands' websites, edited by our team, or taken by our photographers. Images sourced from brands' websites are used in accordance with their terms of use and are the property of their respective owners. Edited images undergo significant modifications by our team to suit our platform's requirements. Original images taken by our photographers are the exclusive property of DODO GLOBAL INC. Unauthorized use or reproduction of any images on this website is strictly prohibited. For inquiries regarding image usage or copyright, please contact

Authenticity Statement

We certify that all products offered for sale on our platform are sourced directly from authorized distributors of genuine Korean beauty brands. Our commitment to authenticity ensures that every product you purchase is guaranteed to be genuine and of the highest quality. For further inquiries regarding product authenticity, please contact us at

Customer Reviews

Based on 15 reviews

initially I wasn't planning to buy this serum and now I think I would take it all the time! I had already used lots of hyaluronic acid products because I have very dry skin but I was never really satisfied with the result. now that I've tried this serum I finally have a perfect moisturizing product! I don't know how to describe it but the sensation upon application and over time is magical! I recommend !


the capacity is small, this serum is worth the cost, the skin is plumped, the texture is not very watery liquid and we feel good in this serum, it is the ceramists who provide this comfort.

Not enough product

LOVED this product. absorbed really well into the skin, wasn’t sticky or too thick but it doesn’t last. using it sparingly day/night it still only lasted about a month maybe month & 1/2. the dark colored bottle makes it impossible to tell how much is left inside

I wish they would sell a bigger version

this serum is all I need to hydrate my skin, the only problem is the bottle is too small and I wish I could get the product in a bigger size.

COSRX The Hyaluronic Acid 3 Serum

Hyaluronic acid helps skin stretch and flex and reduces skin wrinkles and lines. Hyaluronic acid is also proven to help wounds heal faster and can reduce scarring. It moisturizes your skin and keep your face plumped , the quantity and quality is amazing

Nimol K.
Hyaloric Serum

I really love this serum so much. it is work well on my face, too thick and reduce acne. it is also control oil on my face and working so fast with my pimples.

So good

It’s my first serum from this brand and not only it is good but it also had a cool package/bottle, it makes you look professional ahahah

A good hyaluronic acid

I got this hyaluronic acid together with retinol oil both from cosrx. Use hyaluronic acid before applying retinol. A good combination.

Amazing Serum

This is one of the best Hyaluronic Acid Serums I have ever used. I love that it also contains ceramides and amino acids anything with ceramides in it is my favourite, but from using this product I could see a visible difference in my skin and the improvement in my moisture barrier was noticeable! Will definitely be repurchasing!

great product

as good as other corsx products! although I like the retinal collection more. it's gentle, hydrate and safe to use at a daily basis! highly recommend.

Your Top K-Beauty Shop

Offering the Lowest Prices.

Fast & Free USA Shipping

On $40+ Orders!

Real Korean Beauty

Partnering with the Best Brands.