Name: Niacinamide Glutathione Serum
Brand: ONETHING
Rating: 4.47 (19 reviews)

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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.

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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

원씽

Niacinamide Glutathione Serum

Causes Breakouts

Not Moisturizing

Improves Skin Tone

Easily Absorbed

Not Sticky

Clear

Easy to Apply

Boosts Radiance

Smooth

The review highlights the product's excellent absorption and attractive packaging. However, the user expresses concerns about the texture, preferring a thicker consistency. They're uncertain about its effectiveness in providing hydration.

The product's consistency is too thin. I wish it had more viscosity. I'm not sure about its hydrating effects.

It absorbs well into the skin. The design is beautiful, and I love that it's made of glass.

나이아신아마이드 글루타치온 세럼

My skin tone improved, so I used it daily. It has great absorption, so I'm very satisfied with the product.

overall, i am satisfied. there were no disappointments. satisfied

One Thing Niacinamide Glutathione Serum 50ml

The new whitening serum from One Thing

Containing 50,000ppm of niacinamide,
it helps with whitening effects and
inhibits the transfer of melanin pigment.


✔️ Concerns about freckles and blemishes (gently cares for blemishes)
✔️ Skin tone concerns

It absorbs quickly without stickiness
and is fragrance-free, which I really liked.

There isn't really anything. If I had to pick something, it would be the price, but even the price isn't that bad in my opinion.

It's always reliable and used.
The freckles have started to fade, and I've started to see my skin brightening up.
While it may not be dramatic, I can feel my skin becoming more radiant.
The freckles may not be 100% improved, but I'll keep applying it diligently.
I've been using it for about 2 weeks, and I haven't experienced any breakouts or issues.

It has a slightly sticky and yellow texture, so my face looks a bit yellow after application. But it's fine since I can just apply makeup over it.

Collagen-boosting ingredients niacinamide and glutathione. If you apply sunscreen well, it would be good to apply it in the morning as well.

The whitening product was moisturizing, but if you feel your skin is dry, applying a bit more cream will not cause any irritation at all.

There didn't seem to be any particular shortcomings.
I was overall satisfied.

Skin tone improvement, reduction in pigmentation, triple skin tone improvement, soothing care and moisturizing - it's so great for daily skincare!
And I personally think the One Thing Glutathione Spot Serum can easily provide home care that adds vitality to tired summer skin and helps cultivate healthy skin.

Perhaps you dislike the oily style! If you don't like the shiny look, you probably won't like it!^^ I like it - my skin feels like the tone is balanced after 2 weeks ^^

These days, when the weather is so changeable, my skin also becomes sensitive and dull.
Whenever I look in the mirror, my freckles and blemishes seem more prominent, which has been a concern of mine.
That's when I came across the One Thing Niacinamide Glutathione Serum.

At first, I thought it was just another whitening serum, but after using it for about 7 days, I noticed that my skin texture had become noticeably smoother, and my complexion had brightened.
Most importantly, it has a non-sticky, moisturizing, and refreshing finish, so I can apply my makeup right after using it without any issues.

With 7 different vitamin ingredients, it nourishes the skin, and the subtle glow it maintains throughout the day is truly satisfying.
If you're struggling with blemishes, freckles, and dull skin tone, I highly recommend giving this a try.

My skin has become much brighter, and I'm happy to see my face in the mirror again.

Apply 1-2 drops to areas needing intensive care and gently pat to absorb.

It's too early to confirm the effects after short-term use, but I'm hoping for noticeable results.

Radiant and clear complexion

Contains niacinamide to improve uneven skin tone and blemishes

24-hour* vitamin radiance
Seven vitamins nourish the skin, maintaining a dazzling glow for 24 hours

Clear and transparent skin tone
Soothing care & low irritation tested
Suitable for sensitive skin without worry of irritation

Niacinamide 50,000ppm
Helps inhibit melanin transfer and reduce epidermal pigmentation, aiding in skin brightening.

Glutathione 
Helps even out patchy skin tone for a clear and uniform appearance.

Contains tangerine peel extract
Rich in vitamins B1 and B2 that care for clear and clean skin, creating a transparent and flawless complexion.

VITA-TREE COMPLEX
7 vitamin ingredients #skin radiance
Tea tree leaf extract #skin soothing

Seven vitamin ingredients replenish the skin with necessary nutrients, maintaining skin radiance for *24 hours, while tea tree components help with gentle whitening care by soothing the skin.

7-day transformation proven by human clinical trials

Improvement in skin tone uniformity (122.87% improvement)
24-hour radiance sustainability (104.67% improvement)
Skin pigmentation/freckles, age spots, blemishes (119.43% improvement)
Skin texture (111.62% improvement)
Low irritation skin test completed

Moisture-rich, highly concentrated brightening functional serum
A moisture-rich, highly concentrated serum formula that finishes smoothly on the skin without stickiness.

1. Apply immediately after toner - the formula is lightweight and absorbs well
2. Focus on using it in your evening routine, especially on days with high sun exposure
3. Layer once or twice before your moisturizer to maintain a hydrated and clear complexion for longer

- Brightening effects are not immediately noticeable, requires consistent use to see results
- Those with super sensitive skin should check the niacinamide concentration before initial use

- Absorbs lightly without feeling heavy, even in summer
- Combination of niacinamide and glutathione improves dullness and provides brightening effects simultaneously
- Finishes with a hydrated feel, without deep dryness even for dry skin

The hydration might be slightly lacking, but it should be great for summer use.

This serum can improve your complexion, skin texture, dark spots, and blemishes in just 7 days!

The One Thing / Niacinamide Glutathione Serum

Containing niacinamide, which helps inhibit melanin pigment transfer, this serum aids in brightening effects.

When applied to the face, it absorbs quickly without any stickiness, making it perfect for hot summer use.

The vitamin ingredients give your skin a glow, while tea tree extract soothes the skin. It seems to solve everything you want in one product!

It was excellent for my blemishes. This might be the best product I've tried.

Absorbs wonderfully and sinks in beautifully. I'm really satisfied with it!

Even after this short period of use, I can see that my skin looks more radiant and my complexion has slightly evened out. The brightening effect seems more noticeable depending on my skin's condition.

I have combination skin, and I noticed some blemishes starting to form, but they didn't fully develop. This might be due to the high niacinamide content. If you have super sensitive skin, I strongly recommend patch testing before using the full product.

I've been diligently using this for about two weeks. The lightweight texture absorbs well. After patting it in a few times, it absorbs nicely without pilling, which I really like.

Korean Reviews

Niacinamide Glutathione Serum

1 Reviews