Name: HYPER VITAMIN C 23 SERUM
Brand: IsNtree
Rating: 4.53 (32 reviews)

Rich and earthy shades like mustard yellow, olive green, and chocolate brown 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.

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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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Tell us about what you liked - texture, results, skin type, etc

Tell us what didn’t work - texture, skin reaction, or why you wouldn’t recommend it

이즈앤트리

HYPER VITAMIN C 23 SERUM

Feels Harsh on Skin

Leaves a Sticky Residue

Too Watery

Causes Breakouts

Not Irritating

Easily Absorbed

Boosts Radiance

A Little Goes a Long Way

Improves Complexion

Has a Brightening Effect

Pleasant Scent

Nothing really bad to say. It's just that the size was so small. I feel like I only used it a few times before it was already empty.

I liked that it didn't cause much tingling. I'd recommend it. Can't say the effects were mind-blowing though.

하이퍼 비타민C 23 세럼

I didn't really have any complaints while using it, it was great

I felt like my complexion brightened up, and it's affordable with no irritation, making it pleasant to use

The only downside was that I didn't really notice much of a brightening effect.

It was great that I didn't experience any blemishes and the product absorbed quickly into my skin.

There's not much to complain about, but it does feel a bit sticky on the skin.

I love that it's packed with vitamins and has minimal irritation despite its high concentration of active ingredients.

There's nothing I dislike about it. It's slightly sticky, but that's typical for high-concentration vitamin products, so I can live with it.

It has a high vitamin C content and is surprisingly gentle on the skin despite its potency.

It seems to have a strong vitamin content, so it might be effective, but I rarely use it because it's so sticky.

The sticky texture makes it uncomfortable to use. The application experience is not pleasant.

The discoloration and oxidation happen extremely quickly. It turns brown faster than other products, so it's essential to store it in the refrigerator. I've used various Vitamin C products with concentrations from 10% to 23%, but I've never seen one that oxidizes as quickly as this. It turns deep yellow so fast that I had to throw away the last bit of the product. Once refrigerated, you need to keep it chilled until you finish using it. I usually store products in a cool place away from sunlight at room temperature, but this one absolutely needs refrigeration. I won't be repurchasing this.

The irritation is not severe compared to its concentration (similar to other products). Its water-like texture makes it easy to use in combination with other skincare products. While the skin brightening effect isn't dramatic and takes time, it is effective. The price is reasonable considering the concentration.

The value for money is slightly disappointing. However, I'm pleased with how effective it is.

It's a bit sticky, but still usable. I like the results.

I've learned for the first time that even if the ingredients are gentle, they might not suit my skin...

However, for some reason, I've been getting more blemishes since I started using this product...

After using it, I definitely notice my skin looking brighter and more radiant in the morning

I'm completely satisfied with it, but it would be even better if the price was a bit more affordable

With its high concentration of pure vitamin C, you can use more of the active ingredient for the same amount of product

As with most vitamin C products, it seems the characteristic scent is unavoidable. However, it's not bothersome enough to be a real issue.

When applied avoiding blemish-prone areas, it caused no irritation. The brightening and texture improvement were noticeably better. Even my friends mentioned that my complexion had become more even without me saying anything! The formula was less oily compared to other vitamin C products I've used, which I appreciated (since I have oily skin).

Of course, as it's a high-concentration pure vitamin C (ascorbic acid) product, those with super sensitive skin should be cautious.

Korean Reviews

HYPER VITAMIN C 23 SERUM

1 Reviews