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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29 Reviews

꿁꿹낅쿍
Apr 28, 2025
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
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.

민애령
Mar 28, 2025
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
With 3% hyaluronic acid, it really locks in deep hydration
Cons
The strong sour smell and sticky texture are quite noticeable. I guess it's because of the high hyaluronic acid content

올리브4842
Nov 11, 2024
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
I usually use this product, but I stocked up on it when it was on sale, even though I already had some at home.^^
Cons
It's a bit too sticky to apply on its own.
Tip
I would recommend using it at night, mixed with a night cream or sleeping mask.^

민니챠
Feb 20, 2024
Combination Skin
Review under verification
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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
It seems like the product contains a high concentration of 3% hyaluronic acid. I thought this was a positive point, as it is the second highest amount after the ultra-low molecular weight hyaluronic acid from Isntree.
Cons
After cleansing and without using a toner, I applied the hyaluronic acid serum, layering it 2 to 3 times. However, this serum was very sticky, making it difficult to layer. Even applying it just twice was too tacky. I rotate through 3 different hyaluronic acid serums from various brands, but the Cosrx one is the only one that feels so sticky, making it less appealing to use. The hydration seems decent, but the short dropper makes it a bit inconvenient to use.

내봉쮹
May 30, 2023
Dry 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
It seems to have been used quite well. I purchased Cosrx, which is a brand I like, but I didn't feel the moisturizing was extremely good. However, it was good at replenishing moisture and was generally satisfactory.
Cons
There was a bit of stickiness, and compared to that, it had a lot of oiliness or the moisturizing effect didn't last long!

sunflower_1
Feb 8, 2023
Oily SkinSensitive 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
Just one squeeze of the dropper can spread it all out, and the dropper shape makes it easy to use.
Cons
I'm not sure if it's really good or not... There's a bit of stickiness, which is disappointing. It doesn't seem to suit oily skin very well.

mimis12
Jul 26, 2022
Dry SkinSensitive SkinAcne 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
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.

뇨뇨뇨뇽
Jun 24, 2022
Combination SkinSensitive SkinAcne 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
🎉Skin Condition🎊 There are a lot of acne scars on my cheeks and chin. The T-zone (especially the nose) is very oily, but severely dehydrated. The area next to the cheekbones can greet you with enlarged pores. In the winter it's dry, and in the summer it's oily. But it's sensitive, so I can't use just anything - it's a sad skin. I'm known for always applying a moisture essence as an essential step. I've tried almost all the famous moisture essences, even including samples. While most moisture essences have a thin, watery texture, this product has a slightly sticky, viscous moisture essence. (As you can see in the attached photo, it doesn't easily drip down even when I hold my hand upright!) Maybe that's why, even though I work in a dry environment, I don't feel like my skin is cracking in the morning (a humidifier is a must all year round...). I liked the feeling of good moisture protection, but for oily skin types, it might feel a bit stuffy! (Highly recommended for dry skin!) The scent is barely there, and the product doesn't slide around thanks to the oval-shaped cap with a dropper, making it convenient to use! I'll have to use it up to know the pros and cons of the packaging. I'll have to revise and add the review after finishing the product! What could be more important than a moisture essence keeping your skin dewy? This product is just right, not too much or too little - it seems to focus solely on moisture!
Cons
The family members I shared it with found it too sticky, and it felt suffocating for them (they have a slightly oily and healthy skin type). And looking around, the price seems a bit evil... (But I'll probably buy it again after finishing the essence I'm using now - of course, with the Hwahae discount)
Tip
If you apply it generously before bed, it feels so moisturized in the morning! It's like wearing a moisture mask!

난요냔
Jun 24, 2022
수부지Sensitive SkinAcne 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
*This is a review by the Hwahae Trial Reviewer, containing only honest reviews* Moisture ⭐️⭐️⭐️⭐️⭐️ As it is highly concentrated in hyaluronic acid, when I applied it on dry skin days, I hardly felt any dryness afterwards and didn't need to apply much cream on top. The moment I applied it, I could really feel the richness. Fragrance ⭐️⭐️⭐️⭐️⭐️ It is unscented, which I like. I don't really prefer serums with artificial fragrances as it doesn't feel very professional to me, but this product only has the natural scent of the ingredients, which I enjoyed. Packaging ⭐️⭐️⭐️⭐️ Serum bottles are usually taller in design, but this one has a similar width and height, which looks really cute at first glance. However, the dropper is a bit short compared to the overall bottle size, so it might be a bit inconvenient when the product is almost used up.
Cons
Texture ⭐️⭐️⭐️ Despite the rich moisture, it gets absorbed quite quickly, but I personally felt a slightly sticky finish, so I only used it for my nightcare routine without layering makeup on top.

물가에비친달
Jun 24, 2022
Combination SkinSensitive SkinAcne 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
*Hwahae Trial Reviewer Review 1. Fragrance: It has a fresh, almost odorless fragrance. Even those with sensitive skin should be able to use it without any irritation. 2. Texture: It has a runny, slightly viscous texture. It absorbs quickly, but in the recent hot summer, the residual feeling may vary depending on your skin type. As for me, with combination/sensitive/maskne-prone skin, I did feel a bit sticky. Those with dry/normal skin should be fine even in the summer, but oily/dehydrated skin types may find it a bit heavy, so be sure to test it out. 3. Color: It starts off as an opaque white, but becomes transparent when rubbed. 4. Pros: It absorbs quickly and, true to its hyaluronic acid formulation, it seems to focus on replenishing moisture. Unlike some other hyaluronic acid products that are too lightweight and end up drying out over time, or feel too heavy and greasy, this product seems to strike a good balance. It doesn't evaporate too quickly, and if you adjust it according to your skin type and the season, you should be able to be satisfied with it.
Cons
5. Downsides: As mentioned earlier, oily skin types may find it a bit sticky, especially during the rainy season like now... And it can be a bit tricky to find the right companion products that work well with it. 6. Recommended COSRX products that worked well for me: -AHA/BHA Clarifying Treatment Toner = Helps with exfoliation and provides adequate moisture when used with a serum -Green Power Liquid = The red one was too irritating for my sensitive skin, but the green one helped refine my skin nicely without making it too oily when used with the right amount of product!