Name: The Vitamin C 13 Serum
Brand: COSRX
Rating: 4.43 (552 reviews)

4.43

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86 Reviews

강민수다
Apr 7, 2025
Combination SkinAcne Skin
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Pros
I purchased it because I was concerned about skin discoloration. After using it for about a week, the effect personally suited me very well, so I am using it well and have the intention to repurchase.
Cons
I've used it for about a week, but personally, I don't like the scent. When I applied this product and woke up the next day, the scent was still lingering on my hands. And when I applied it to my skin, it spread very well, but once absorbed, it became extremely sticky. Since my skin type is oily, I feel it more that way. However, it becomes fine after about 3 minutes, so I think I'll continue using it while keeping that in mind.

뽀그르르르
Apr 2, 2025
Combination SkinSensitive Skin
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
Vitamin C is good for beginners and intermediate users trying it for the first time. It's often on sale and available at all Olive Young stores, making it easily accessible and a reliable product.
Cons
There is a bit of stickiness. It is recommended to refrigerate to slow oxidation, but once started, taking it out and using it again feels a bit uncomfortable, so I kept doing it, which was very annoying.

히아데스1
Apr 2, 2025
Combination Skin
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
Although it contains vitamin ingredients, it is not irritating to the skin and its absorption is not poor. The whitening effect seems to be known only after using it consistently.
Cons
At first, it may feel sticky, but once you spread it out, it becomes fine quickly.

레오나르드
Mar 30, 2025
Combination SkinSensitive SkinAcne Skin
Review under verification
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The red trouble has faded, and I have a sense of vitality across my entire skin.
Cons
The scent of canned tuna is present, along with a slightly sticky and irritating sensation, so there may be mixed opinions about it.

0.0_030_0.0
Mar 22, 2025
Dry SkinSensitive Skin
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
The amount of irritation was not strongly felt, and it was thin and spread well.
Cons
The stickiness seems a bit excessive compared to the content, but otherwise it has good value for money.

단순한곰이
Mar 17, 2025
Dry SkinAcne Skin
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
After refrigeration, I used it within 2 months. It's better because it has less skin irritation than 23c.
Cons
The product has a sticky texture, so it's best to let it absorb or massage it with a device to improve absorption.

오이민
Feb 16, 2025
Combination SkinAcne Skin
Review under verification
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
This serum is a gentle and high-performance adaptation stage before moving on to more potent formulas, as it does not contain a high concentration of vitamin C. I did not experience much irritation.
Cons
This serum is not high in vitamin content, so it is unlikely to provide whitening effects. The usage experience is also somewhat sticky and not particularly pleasant.
Tip
The Batiminc23 full-adaptation serum is a must-use product.

밍밍기디
Feb 1, 2025
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 Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
My skin type is combination and I have a bit of freckles. When I used other vitamin C products, my skin would sting and I would get breakouts, but this product did not cause any issues, so I used it well. My face also became much brighter, so I am satisfied.
Cons
The formulation was a bit sticky ㅠ Aside from that part, there were no other shortcomings.

거짓말을할수없는
Dec 31, 2024
Normal SkinSensitive SkinAcne Skinproduct.Atopy Skin
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
After applying, there is no distinct peanut-like sensation typical of vitamins, but if there is even a slight peeling or extrusion, applying it will be extremely painful. After consistently applying it, the discoloration from skin extrusion and scarring has been observed to improve rapidly.
Cons
In the morning, it seems better not to apply it. I thoroughly absorbed the toner and applied it, but I felt a strong stickiness when applying the vitamin step, and my face became very yellow after applying it. After cleansing in the morning, my face is pale, but it seems better to only apply it when I'm at home.

dotory0809
Dec 6, 2024
Normal Skin
Review under verification
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Reviewed by Hwahae Trial Reviewers
This review was written by a Hwahae Trial Reviewer 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. Trial Reviewers' reviews undergo the same strict verification process as regular reviews, and if they don't meet our standards, revisions will be requested.
Pros
Compared to other vitamin products, I liked that there was no irritation.
Cons
The usage experience has a slight stickiness, which is a bit disappointing.