Glutathione serum for combination skin, 2-week test: HEEDA
In short
HEEDA Glutathione High-End Glow Radiance Serum is a Korean skincare serum that I used morning and night for two weeks on combination skin with an oily T-zone and dry U-zone. Its watery texture and wear under makeup worked well for me, and I personally felt my tone looked more even and my skin had a lasting inner glow.

Good to know
- Product
- HEEDA Glutathione High-End Glow Radiance Serum
- Testing period
- 2 weeks, every morning and evening
- Skin type
- Combination skin (oily T-zone, dry U-zone)
- Where to buy
- Search “HEEDA serum” on Coupang
Prices as written by the tester on Dec 19, 2025 · not updated automatically
How did it feel on combination skin?

I have combination skin: my T-zone gets oily easily while my U-zone is dry, so sticky serums tend to feel suffocating. This had a watery texture that spread as lightly as water and seemed to adhere transparently to my skin.

Even when I applied it before morning makeup, it did not pill for me. It absorbed lightly, and I felt less tightness in my U-zone, so it was comfortable to use during dry periods.

What did I notice after using it morning and night for two weeks?

I used it every morning and evening for two weeks. Areas where dullness and blemishes had concerned me personally looked a little more refined, and my overall skin tone felt relatively more even. The dark spots I had been concerned about after sun exposure while running also seemed to fade, but this is my personal experience.


What I liked most was that, rather than leaving only a surface shine, it gave my makeup base a clear-looking inner glow that lasted. My U-zone also felt hydrated without tightness throughout the day.

What skin concerns did I consider it for?

- When looking for a lightweight serum with less stickiness
- When both T-zone oiliness and U-zone dryness are a concern
- When looking for a fresh texture to use before makeup
- When wanting to add hydration during a dry season

Would I keep using it?

The brown glass bottle and dropper made it easy to control the amount. The product description’s emphasis on glutathione and niacinamide was also one reason I chose it, and since its fresh feel and hydration suited me well, I plan to keep using it.
Where to buy
- Tested
- 2주, 매일 아침저녁
- 쿠팡
- '희다 세럼' 검색 후 구매






