Glutathione serum for dull-looking skin: HEEDA All-in-One Serum

In short

HEEDA Glutathione All-in-One Serum is a 30ml Korean skincare serum I used morning and night for one week for skin that looked dull. It absorbed lightly with almost no scent and left a subtle glow, though any change in skin tone was only my personal impression.

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

Good to know

Product
HEEDA Glutathione All-in-One Serum
Volume
30ml
Test period
1 week, morning and night
Where to buy
Search for “HEEDA serum” on Coupang

Prices as written by the tester on Sep 5, 2026 · not updated automatically

How did I use it for one week?

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

On many days, my skin looked dull and lacked vitality, so I tried HEEDA Glutathione All-in-One Serum. Rather than looking for a change in a day or two, I applied it morning and night for one week with the intention of using it consistently.

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

How did it feel to apply and after absorption?

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

The smooth texture was easy to spread over my skin, and it applied with moisture without feeling like it sat heavily on the surface. It absorbed quickly and left a clean finish, so even when I applied makeup after using it in the morning, it did not feel as though it pilled much.

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

Is it suitable for people sensitive to fragrance?

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

I do not prefer strongly scented skincare, and this serum had almost no noticeable fragrance. I could only detect it faintly when first applying it, so it felt less burdensome to use every morning and night.

Glutathione serum for dull-looking skin: Heeda All-in-One Serum
Glutathione serum for dull-looking skin: Heeda All-in-One Serum

How did my skin look after one week?

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

When I looked in the mirror, I felt that my skin seemed a little clearer than before. After applying the serum, it felt moisturized rather than excessively shiny, with a subtle sheen that gave it a naturally glowing finish.

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

However, any change in skin tone was my personal impression after using it, so I cannot make a definite claim about its effects. I was pleased with how light it felt to layer on days when my skin looked dull.

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

Is it convenient for busy mornings?

Glutathione serum for dull-looking skin: Heeda All-in-One Serum

The 30ml size was easy to spread on and let absorb even on mornings when I was short on time. I found myself reaching for it without hesitation on days when it was difficult to keep up with several skincare steps.

Where to buy

HEEDA · Heeda Glutathione Brightening Tone Care Glow Serum, 30ml희다 글루타치온 미백 톤케어 광채 세럼 1개 30mlPrices as written by the tester on Sep 5, 2026 · not updated automatically
Tested
1주일, 아침저녁
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