# Glutathione brightening serum for dull combination skin: HEEDA

- By Seongyeon (https://superchart.com/en/@daily-use-journal/)
- Written Dec 22, 2025
- Updated Sep 11, 2026
- Products › Beauty products
- Product provided: I received the product and used it for about two weeks. [type=provided]
- English edition: https://superchart.com/en/@daily-use-journal/heeda-glutathione-serum-two-week-glow-459b/
- Also in: [한국어](https://superchart.com/ko/@daily-use-journal/heeda-glutathione-serum-two-week-glow-459b/index.md)

## In short

HEEDA Glutathione High-End Glow Radiance Serum is a Korean brightening serum. I used it morning and night for about two weeks on combination skin and found it light and non-sticky, with a slightly more even-looking tone and texture.

## Good to know

- **Product**: HEEDA Glutathione High-End Glow Radiance Serum
- **Testing period**: About 2 weeks, morning and night
- **Skin concerns**: Combination skin, inner dryness during seasonal changes, dullness, and uneven tone
- **Key ingredient combination**: Glutathione and niacinamide
- **Where to buy**: Search “HEEDA serum” on Coupang

*Prices as written by the tester on Dec 22, 2025 · not updated automatically*

## How did it apply on combination skin with inner dryness?

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow-459b/heeda-glutathione-serum-two-week-glow-01-1cba4-1200.webp)

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-02-1catg-900.webp)

I used it when my skin looked dull, dark spots were noticeable, and inner dryness flared up as the seasons changed. At first, it spread lightly and fluidly, and felt as though it absorbed quickly into my skin.

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-03-1r5i2-900.webp)

With little stickiness, it did not feel burdensome to apply morning and night. Even on days when I did not use multiple skincare steps, my skin seemed to feel less tight underneath. It also did not feel especially heavy or pill even when layered several times.

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-04-1bf3p-900.webp)

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-05-hxusi-900.webp)

## How did my skin look after two weeks of use?

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-06-13fnx-900.webp)

I did not notice a distinct change at first, but after about two weeks, I felt that my skin tone looked more even in the mirror and previously dull areas looked more refined. Dark spots also seemed lighter, though this is the writer’s personal observation from use.

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-07-1okq5-900.webp)

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-08-a8wsx-900.webp)

Rather than leaving only a greasy surface shine, it left a subtle glow. My skin texture looked more refined, and my base makeup also seemed to apply a little more cleanly.

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-09-acy5l-900.webp)

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-10-1ghwy-900.webp)

## Could I use it on sensitive days and before makeup?

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-11-sa5hk-900.webp)

I was concerned that the glutathione and niacinamide combination might be irritating, but I was able to use it comfortably even on days when my skin felt sensitive. It seemed to support makeup without pilling, so it was easy to add to my daily routine.

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-12-1yrx1-900.webp)

![Glutathione brightening serum for dull combination skin: HEEDA](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-13-15gdi-900.webp)

It may suit those who prefer a light, fresh texture and want continued use to leave their skin tone and texture looking more refined.

## Products

- HEEDA Glutathione High-End Glow Radiance Serum — HEEDA
- 약 2주, 아침저녁
- 쿠팡 — ‘희다 세럼’ 검색

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