COSRX The Hyaluronic Acid 3 Serum Reviews

Name: The Hyaluronic Acid 3 Serum
Brand: COSRX
Rating: 4.47 (188 reviews)

4.47

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31 Reviews

꿁꿹낅쿍
Apr 28, 2025
Combination Skin
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Pros
Wow, this product really made me realize what it means for skin to be truly hydrated... It's so rich and nourishing. I feel like my skin texture has actually improved after using this. Really good stuff!
Cons
It does leave a slightly sticky feeling, but that's about the only minor drawback I can think of.

꽃부리사랑
Mar 3, 2025
Combination SkinSensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
Used for 3 evenings in January 2025 Skin type: Combination leaning towards dry, super sensitive skin, prone to allergies and whiteheads Rich texture that doesn't slide off. Absorbs moderately - feels a bit sticky after application, but this sensation fades over time. Leaves a slight glow on the skin after use.
Cons
Disappointing to see many ingredients that may irritate sensitive skin. Despite positive reviews, I decided to try it, but unfortunately... Experienced skin irritation with itching and stinging after application. Overall skin redness and allergic reaction occurred. On the third day, my skin felt so irritated that I had to quickly rinse it off with cold water without cleanser. Applied my usual soothing cream thickly like a mask before bed. The next day, small red bumps appeared, so I applied a skin ointment and discontinued use after using it for only 3 evenings. The dropper is too short, requiring two pumps to dispense enough product. The black container makes it impossible to see how much product is left.
Tip
This seems better suited for those with relatively healthy skin rather than sensitive, problematic skin. My sister, who never has adverse reactions to skincare, used it without any issues. However, considering age and season, she did find it a bit drying.

소박한꾀꼬리류97633
Dec 7, 2024
Dry Skinproduct.Atopy Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
My skin feels brighter and firmer.
Cons
It's a bit less moisturizing than I expected, which is disappointing, but it's still good.

눈쑥
Jan 26, 2024
Combination Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
When using the massage device, I use it together with other ampoules, and it feels very smooth and firm.
Cons
There are no disappointments, and I am very satisfied. I have added it to my cart again.

쿠키캬코
Jul 5, 2023
Combination SkinSensitive Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The formula seems to be quite dense, so the moisturizing power seems to be good.
Cons
The volume is too small, so it's disappointing that I have to purchase it once a month.

스위트홈무셔
Feb 6, 2023
수부지Sensitive SkinAcne Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The ampoule formula is very dense and creamy, so it helps lock in moisture well after application.
Cons
The bottle's dropper is short and the dark container makes it hard to see inside, so it's a bit inconvenient to use. You can't really tell how much you've used... And most importantly, if you apply too much, it ends up pilling up like flakes on the skin.
Tip
Be sure to apply the right amount. If you slather it on like a regular serum, it will just pile up. One pump seems to be the right amount to cover the whole face.

bbjie
Dec 19, 2022
Dry Skin
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Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The positive aspects: As I have extremely dry skin, I like to apply the serum multiple times in a thick, dense manner before applying the cream. The COSRX Hyaluronic Acid Serum can be applied multiple times in a dense manner without feeling heavy or stuffy, which I liked. The distinguishing factor or difference from other serums is the very unique and distinct black-colored design, which gave me a sense of assurance that the contents inside are well-protected. The dense application went on smoothly, making the next steps of my skincare routine easy. The key feature is the transparent and slightly weighted, clear formula. However, it is not heavy, but rather a moisturizing and dense texture.
Cons
The downside: While applying it densely is a good tip, if you apply too much, it can become excessively sticky. You need to be very careful with the amount used (for dry skin only). Additionally, when using certain sunscreens (the more moisturizing ones), there is an issue where the serum seems to 'ooze' out, which is a bit disappointing. If this is an unavoidable part, it might be better to forgo the use of those sunscreens.
Tip
For the best results, avoid using overly moisturizing sunscreens and instead, apply multiple layers of the serum before bedtime to allow for proper absorption (for dry skin only).

dntdmasla
Sep 2, 2022
Dry SkinSensitive Skin
Review under verification
The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.
Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
It absorbs well into the skin with a supple texture. Since I have a dry skin type, I apply additional lotion afterwards, but I think this would be sufficient for oily skin types.
Cons
Even though I have sensitive skin, I didn't experience any breakouts. My skin texture also seems to have improved, so I'm writing this review as a record.

mimis12
Jul 26, 2022
Dry SkinSensitive SkinAcne Skinproduct.Atopy Skin
Review under verification
The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.
Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The product is quite moisturizing and smooth, and by the time I've applied it all over, my skin feels plump and nice😆 I liked how my skin base became smooth and glowy. It also seems to quickly address dryness (at least on the surface of the skin). This seems like a good skincare product to apply before makeup. And with its mild, unobtrusive feel, it's a good daily basic product to use.
Cons
The deep, saturating moisture feeling is a bit lacking. And the plump skin state after full application can also feel a bit sticky.

910991
Jun 29, 2022
Combination Skin
Review under verification
The content is currently being reviewed by the Hwahae operations team, and the verification will be completed by the next business day (excluding weekends and holidays) from the date the review was written.
Reviewed by The Hwahae Testers
This review was written by The Hwahae Testers who received the product for free and evaluated it with a sense of representing Hwahae. The review is completely unbiased and honest, with no guidelines or restrictions. Reviews by The Hwahae Testers undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
First of all, my T-zone is oily, and the rest of my skin is dry combination! 1. Texture: The texture is bouncy, so it's good to apply before makeup. I was worried it might be too heavy and sticky since it's a hyaluronic acid ampoule, but that wasn't the case at all! 2. Non-irritating: My skin is currently very sensitive, so I was hesitant to test it, but fortunately, it didn't cause any breakouts or significant irritation. 3. Hydration: I like the appropriate balance of oil and moisture, and it seems to achieve that well, so I'm satisfied.
Cons
I haven't really found any major downsides yet! If I experience any breakouts or irritation while using it, I'll make adjustments. Since it's not an ampoule with an incredibly noticeable effect, I'm not sure about repurchasing, but I think it would be good to use during the seasonal changes!