Name: BRIGHTENING SERUM
Brand: ISOI
Rating: 4.55 (330 reviews)

Rich and earthy shades like mustard yellow, olive green, and chocolate brown look great on you

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Bright and fresh shades like coral, warm pinks, and fresh greens look great on you

Soft and muted shades like pastel blues, dusty pinks, and soft lavenders look great on you

High-contrast and bold shades like pure white, black, icy blues, and deep reds look great on you

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This is a Health Functional Food certified by the Ministry of Food and Drug Safety (MFDS) of Korea, designed to help maintain and improve your health.

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.

Each ingredient is selected for its specific purpose, such as improving skin hydration or brightening. However, the inclusion of these ingredients does not guarantee the overall effectiveness of the final product. Simply using these ingredients does not ensure the product will deliver the claimed benefits.

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아이소이

BRIGHTENING SERUM

Scent Fades Quickly

Contains Artificial Fragrance

Disrupts Oil-Moisture Balance

Absorbs Well

Has an Alcohol Smell

Doesn't Last Long

Causes Allergic Reactions

Pleasant Scent

Doesn't Drip

Easily Absorbed

Not Sticky

Refreshing

Easy to Apply

Lightweight

After applying the toner, it seems good to layer on the ampoule.

The user experience was good and there were no troubles, but the price seems a bit exorbitant.

I've been using it for about 3 months.
I tried it because I heard it's good for whitening and blemishes.
The scent and spreadability were so-so, but I'm not sure about the functionality.
And the price seems a bit higher compared to other products, which is disappointing.

Skin type: Dry

Spreadability: It has a slightly watery+jelly-like texture and absorbs well immediately after application.

Recommended skin type: Suitable for all skin types.

브라이트닝 세럼

The serum is always lacking in quantity. When I apply it generously, it disappears quickly.

The Hwahae was extremely moisturizing and absorbent.
Since I am dry everywhere except the T-zone, I tend to apply more generously to the drier areas. After applying, it remained moisturizing for a long time, and fortunately, I have not been experiencing many breakouts lately.

The price is on the expensive side, and it lacks moisture, so using it alone would be quite drying.

Half a bottle used and the acne scars have definitely faded!!
However, it seems the product will be most effective after all the acne has been treated!

Sometimes it was inconvenient when it slipped off if applied incorrectly, but otherwise it was fine.

Hwahae improvement is not quite clear, but with consistent use, there is a sense of becoming more radiant.

There were no disappointments about the product, but I wish I had used it sooner.. This is my only regret.

Spreadability
When using the serum, spreadability is also an important consideration, but it was absorbed quickly without any slipperiness or stickiness.
Even when layering and applying, there was zero stickiness and zero heaviness, and it felt moist and refreshing.
After application, the skin feels taut and firm.

Moisture
While the main focus of the product is blemish improvement, the moisture level was surprisingly good. As a dry-skinned person, it felt just right for my dry skin.

Complexion
This is truly an amazing product. I used to think my complexion looked dull every time I looked in the mirror, but after using it, I could feel my complexion becoming brighter, and those around me also commented that my skin and complexion looked better.

Pigmentation
My skin has severe pigmentation issues, but I've seen significant effects. Blemish marks are improving faster, and the uneven pigmentation is becoming more uniform.

Skin Texture
My skin used to be rough, uneven, and dull, but the texture has become smooth. There's a subtle inner glow as well. Comparing the before and after, the skin texture has improved a lot.

Makeup Application
Using this, my makeup applies well. With the improved skin texture, makeup naturally adheres better. The absorption is quick, so it doesn't cause the makeup to slip, and the moisture lasts without drying out over time. The adhesion also improves. It's truly an all-in-one serum - my skin makeup adheres perfectly. That's why I always use it before makeup.

Sun Protection
We all know how damaging UV rays can be to the skin. The Isoi blemish serum soothes and cares for sun-damaged skin, hindering the formation and movement of melanin pigmentation, helping with tone improvement and preventing blemishes from surfacing. It's a smart serum that not only improves but also prevents, plus it has antioxidant effects, so there's no reason not to buy it.

Ingredients
As someone with sensitive, acne-prone skin, I'm always worried about trying new products, but this has completed sensitive skin irritation testing and is suitable for acne-prone skin. It's also Excellent-rated by the German Dermatest and has vegan certification, so I can use it with confidence.Looking at the full ingredient list, it's easy to see why Isoi is so confident about their ingredients.
The effects are stronger, but the irritation is 0.00 - it's just amazing. I haven't experienced any breakouts while using it.

Fragrance
While I generally prefer fragrance-free, the subtle rose scent is pleasant and not polarizing.

Continued use seems to yield even better results, so I plan to keep using it for ongoing care.
I'm so glad I found such a great product after a long search. I used to really struggle with blemish marks, but I'm so fortunate to have discovered Isoi. Thanks to the blemish serum, my skin has improved a lot, boosting my confidence. Better skin really does make a difference in one's appearance.
I've tried many blemish-targeting serums, but this is the most satisfactory and effective one.
Now I understand why it's so popular and well-reviewed - it truly deserves its top ranking. The range of benefits from just one bottle makes it a convenient all-in-one solution, which increases my satisfaction.
Without exaggeration, this product is genuinely great, so I strongly recommend everyone to try it.

This is a good formulation to use in the summer.

Rather than whitening, I used it hoping to improve acne and pigmentation. However, it did not particularly help improve acne scars and pigmentation.

The rose scent is pleasant.
The usage experience is very refreshing with this ampoule.
While the moisturizing power needs to be supplemented with other ampoules or creams, I was satisfied as I really enjoy the lightweight feel.

Since I have hereditary freckles, if I don't manage them even a little bit in the summer, my freckles increase tremendously. I use the Isoi serum, the whitening ampoule and serum from Daewoong Pharmaceutical, whitening creams from other companies, and a whitening mask before bed. When I consistently manage my skin with this full set, it seems to be effective in controlling my freckles and evening out my skin tone. I do this consistently~~~

There are not many significant drawbacks so far. The price is a bit high?

My skin type: dry / I have hereditary freckles :( / I don't really get along with sunscreens / I don't have any breakouts, but if the cosmetics don't suit my skin or if there's an imbalance in oil and moisture, something like a milia can pop up.. (starting from my 30s)

The renewed product seems to be better.

When I tried it once before, the efficacy and whitening effects seemed to be lacking compared to other functions, so I didn't buy it a second time.
But since the reviews for the renewed product are good, I decided to trust it and buy it again.

As the weather has warmed up and the UV rays have gotten a bit stronger, my freckles started popping up right away, so I rushed to buy it.

The texture is more viscous than a water-based formula, and it seems a bit more moisturizing than the previous version. The rose scent is still pleasant.

After using it for a day or two, the effects aren't noticeable yet, but after about two weeks of use, my face is starting to look brighter.

I'll keep using this consistently through the summer.

This has some kind of metallic, headache-inducing scent and there's not much of it, but it's a shame to just throw it away, and using it hasn't made anything better.

I bought it because it was ranked #1, but when I tried it, it was just so-so to use.

In fact, as everyone does, I had hoped for a dramatic user review, but it was not quite like that. However, as I have been using Hwahae and Noscara consistently, I can see that the discoloration is gradually fading.

I have a troublesome oily skin type.
1. The fragrance is nice. I like rose scents, but this one is just a hair away from feeling artificial. It's not overbearing, and the fragrance doesn't linger for too long, which is good.
2. It applies smoothly and moisturizes well. It has a watery soothing gel-like texture. A single pump on each cheek is enough to use.

I don't really feel like I'm getting any whitening effects. Of course, I'll have to use it for longer...

The product absorbs well into the skin and leaves a refreshing finish, which I like.

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.

I recommend using this whitening serum as a standalone serum in your evening skincare routine or layering it on areas that need brightening.
Adjusting the amount used can reduce stickiness while maintaining absorption, allowing for a more refreshing application.
I found that gently pressing it into the skin with my palms and then waiting a sufficient time before applying cream worked best for me.
This product is well-suited for nighttime use, as it is manageable without feeling burdensome. If you are sensitive to fragrance, you can lightly mist your skin or toner before using it.
I also tried soaking a thin cotton pad with it and using it like a toner pad, which worked well without causing flaking. 
Most importantly, as a whitening serum, consistent use is key to seeing results, so I recommend incorporating it comfortably into your long-term routine rather than expecting rapid effects.

Personally, the most disappointing aspect was the fragrance.
I was expecting a subtle rose scent, but instead it had a more artificial rose fragrance mixed with an alcoholic note, which was a bit surprising on the first use.
Those with sensitive noses like mine may find the fragrance jarring, so it's something to keep in mind.

The absorption is fairly quick, but the lingering stickiness afterwards was a bit disappointing.
It leaves a slightly tacky finish rather than a moisturized feel, so those with oily skin or who dislike a heavy sensation may have mixed feelings about it.

Overall, if the artificial fragrance and stickiness were improved, it could be loved by more people.

The product has good spreadability and absorption. When applied, it penetrates the skin softly and is quickly absorbed, allowing for use without a heavy, stuffy feeling.
The serum itself has a medium-bodied texture, not too thin or too thick, making it easy to apply.
As a whitening serum, it manages the skin to make it look bright and clean, making it an expectation-raising product. Even after about a week, the complexion seems to have improved! Does it look brighter?
If used consistently, I expect the effects will become more noticeable. For those whose skin is not highly sensitive, this serum seems suitable for daily whitening care.
After use, the skin feels slightly plump, indicating good moisturizing and finishing properties.
Additionally, the clean pump-type packaging allows for hygienic use, and the amount is easy to control, making it convenient and hygienic to use.
Personally, I think this serum would be more suitable for dry to combination skin types rather than oily skin.

ISOI BRIGHTENING SERUM Reviews

1 Reviews