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The Hyaluronic Acid 3 Serum

COSRX

Savings Event
Current Price $21.25
15% off.
Previous Price $25.00
0.67 Ounce
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Highlights

  • Hyaluronic acid
  • Best for: Normal skin

Details & care

What it is: A highly concentrated 3% hyaluronic acid serum that hydrates, plumps, soothes and supports the skin's moisture barrier.

What it does: The serum helps infuse skin with hydration, strengthening the skin barrier and giving your complexion a lasting glow. it locks-in moisture to support the moisture barrier and leave skin plumped, hydrated and soothed.

How to use: After cleansing, during the serum phase, apply a few drops of the serum onto the skin. Use fingertips to gently massage and absorb the serum, starting from the center of the face and working towards the edges. It can be used in the morning or evening.

  • 0.67 oz.
  • Item #10133851
  • Core Product ID 3333337DXS

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Reviews

(131)1314.8 out of 5
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Most helpful positive review

Jan 3, 2025

This is the serum!

I’ve been on the search for a really good hyaluronic acid serum and this is it! I’ve been getting a filler as I age and flying a lot so my skin is losing its elasticity as I also am an athlete. My face was instantly plumper using the serum. I had compliments after just a few days
Dayna Clama
Verified purchase
2found this helpful

Most helpful critical review

Sept 12, 2026

Every one should have this,

[This review was collected as part of a promotion.] Every one should have this, especially for day time skincare routine. I love the smooth finish. It's very good at hydrating and treating the skin. Give the skin a radiant finish. A little amount does it. The quality is top notch. You can never go wrong with this, as result is very visible with a few days.
Blessing O.

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5 stars85%
4 stars10%
3 stars3%
2 stars1%
1 star2%

Pros:

Cons:

Current reviews don’t mention any.
Jan 3, 2025

This is the serum!

I’ve been on the search for a really good hyaluronic acid serum and this is it! I’ve been getting a filler as I age and flying a lot so my skin is losing its elasticity as I also am an athlete. My face was instantly plumper using the serum. I had compliments after just a few days
Verified purchase
Dayna Clama
Size purchased:
Small
2found this helpful
Sept 12, 2026

Every one should have this,

[This review was collected as part of a promotion.] Every one should have this, especially for day time skincare routine. I love the smooth finish. It's very good at hydrating and treating the skin. Give the skin a radiant finish. A little amount does it. The quality is top notch. You can never go wrong with this, as result is very visible with a few days.
Blessing O.
Sept 9, 2026

I this product, goes in

[This review was collected as part of a promotion.] I this product, goes in like water. Dropper is amazing. And I love the fact that it is 3% HA.
Kelly H.
Sept 1, 2026

I chose this serum because

[This review was collected as part of a promotion.] I chose this serum because of its hight quality ingredients and Cosrx's strong reputation. The formula feels lightweight and absorbs easily. Since I have only recently started using it, I will like to continue for at least one month before evaluating the product. So far my experience has been very positive.
Elvira I.
Aug 29, 2026

Love this serum!! Skin stays

[This review was collected as part of a promotion.] Love this serum!! Skin stays lubricated and supple all day. Tried so many other hyaluronic serums with less than noticeable results. This one is a keeper!
natalie d.
July 20, 2026

This is my holy grail

[This review was collected as part of a promotion.] This is my holy grail to building my skin barrier. I use this every night religiously!
Ashley C.