Glutathione serum for sensitive skin, 3-day test: HEEDA
In short
HEEDA Glutathione Serum is a Korean brightening serum that I used on sensitive skin, morning and night for three days. It felt light, absorbed without stickiness, and seemed to reduce post-cleanse tightness, but I think it is too early to judge any tone change.

Good to know
- Product
- HEEDA Glutathione Brightening Tone Care Glow Serum, 1 count, 30 ml
- Test period
- 3 days, morning and night
- Skin type
- Sensitive skin
- Where to buy
- Search “HEEDA serum” on Coupang
Prices as written by the tester on Sep 3, 2026 · not updated automatically
Was there any irritation after using it on sensitive skin for three days?

I have sensitive skin and am concerned about tightness after cleansing, a dull complexion, and dark circles. Because sticky serums have sat on top of my skin before, I had been skipping the serum step and using only cream.

I worried that a new product might sting or cause redness, but I did not notice redness or irritation while using it morning and night for three days. Still, this is only my personal experience over a short period.

How are the texture and stickiness?

It has a watery texture, so it felt light when I dispensed it onto my hand and absorbed quickly after application. There was none of the stickiness I had worried about most, and my skin felt soft after it absorbed.

When I looked up the ingredients, I found liposomal glutathione and niacinamide. Since I had concerns about my skin tone, having both ingredients was one reason I chose it.


How did it feel before makeup and after cleansing?

The first thing I noticed was less tightness after cleansing. Before, my skin felt tight enough that I had to apply something immediately, but that feeling was reduced after using it. When I applied lotion after the serum, the lotion also seemed to absorb better.

It is fragrance-free, so I could use it comfortably in the morning. The dropper let me dispense only the amount I needed, and my makeup did not pill when I applied it afterward.

Can you tell whether skin tone changed after three days?

My skin seemed to have a glow, and my complexion felt a little brighter. But since it was only day three, I think it is too early to make a definite judgment about tone changes. I ended up using about three full droppers each time, so with its 30 ml size, I may use it up relatively quickly at my rate of use.

For someone like me who hesitated to use serum because of stickiness, it was easy to add to my routine. However, I plan to judge tone changes after using another bottle.
Where to buy
- Tested
- 3일, 아침저녁
- 쿠팡
- '희다 세럼' 검색 후 구매






