# Glutathione glow serum for dull skin, 2-week test: HEEDA

- By Yeoan (https://superchart.com/en/@bookmarks-and-batteries/)
- Written Dec 17, 2025
- Updated Sep 11, 2026
- Products › Beauty products
- Product provided: I received this product to try. [type=provided]
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## In short

I used HEEDA Glutathione Brightening Glow Serum morning and night for two weeks after toner. The fast-absorbing ampoule texture and layered hydration felt comfortable, but I did not see a clear change in dark spots.

## Good to know

- **Product**: HEEDA Glutathione Brightening Glow Serum
- **Test period**: 2 weeks
- **How I used it**: Morning and night after toner
- **Packaging**: Dropper bottle
- **Where to buy**: Search “HEEDA serum” on Coupang

*Prices as written by the tester on Dec 17, 2025 · not updated automatically*

![HEEDA Glutathione Brightening Glow Serum product](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-01-q8muo-1200.webp)

## How did I use it for two weeks?

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-02-1lmct-900.webp)

My skin tone looked dull and felt dry, so I tried HEEDA Glutathione Brightening Glow Serum. I applied it morning and night for two weeks after toner.

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-03-1gy10-900.webp)

## What were the texture and absorption like?

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-04-1ryf3-900.webp)

It had an ampoule texture that was neither too runny nor too thick. When I dispensed it onto the back of my hand and worked it in, it spread smoothly and absorbed relatively quickly without sitting on the skin. It left a subtle hydrated feeling afterward.

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-05-t67va-900.webp)

The dropper made it easy to control how much I used. I did not experience stinging or discomfort on my skin while using it.

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-06-19ddn-900.webp)

## How did my skin look after two weeks?

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-07-ot4om-900.webp)

Right after applying it, my skin seemed to have a glow. When I used it before base makeup, my skin looked more hydrated. After about a week, I felt that my overall skin tone looked a little more even and clear.

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-08-bkjq3-900.webp)

However, I did not notice a change where dark spots visibly disappeared. When I layered it twice, the hydration seemed to last longer, so I used it on days when dryness was bothering me.

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-09-1cbwf-900.webp)

## How did I layer it?

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-10-1snjz-900.webp)

- I applied one extra thin layer over my cheekbones, where dark spots concerned me.
- The day before an important appointment, I applied a generous amount of serum and used it with a modeling pack.

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-11-tzgz3-900.webp)

## Who might it suit?

![Glutathione glow serum for dull skin, 2-week test: HEEDA](https://img.superchart.com/images/heeda-glutathione-glow-serum-two-weeks/heeda-glutathione-glow-serum-two-weeks-12-id7y8-900.webp)

It may be worth considering if you prefer a less-sticky serum texture or want hydrated-looking skin before makeup. For me, the hydration and glow were the most impressive parts over the two-week test.

## Products

- HEEDA Glutathione Brightening Glow Serum — HEEDA
- 2주, 아침저녁
- 쿠팡 — '희다 세럼' 검색

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