# Brightening serum for dehydrated oily skin: HEEDA Glutathione - By Eun K. (https://superchart.com/en/@gyeonggi-meal-stops/) - Written Nov 21, 2025 - Updated Sep 11, 2026 - Products › Beauty products - Product provided: I received this product and used it for about two weeks. [type=provided] - English edition: https://superchart.com/en/@gyeonggi-meal-stops/heeda-glutathione-serum-two-week-glow-6dec/ - Also in: [한국어](https://superchart.com/ko/@gyeonggi-meal-stops/heeda-glutathione-serum-two-week-glow-6dec/index.md) ## In short I used HEEDA Glutathione High-End Glow Brightening Serum for about two weeks on dehydrated oily skin in a heated office. Its thin texture absorbed quickly and felt comfortable before makeup; I felt less inner tightness and a more even-looking tone, though these results reflect my own skin and use period. ## Good to know - **Product**: HEEDA Glutathione High-End Glow Brightening Serum - **Volume**: 30ml - **Test period**: About 2 weeks - **Skin type and setting**: Dehydrated oily skin in a heated office - **Where to buy**: HEEDA Smart Store *Prices as written by the tester on Nov 21, 2025 · not updated automatically* ## How did it feel on dehydrated oily skin? ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-01-4ex6h-900.webp) My skin is dehydrated oily skin: smooth on the surface but tight underneath. When I spend a long time in a heated office, it tends to feel sensitive and tight, so I used this while paying attention to both dryness and a dull-looking tone. ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-02-1mkgr-900.webp) ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow-6dec/heeda-glutathione-serum-two-week-glow-03-1ekjt-1200.webp) ## Was the texture and dropper easy to use? ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-04-ibtxf-900.webp) It has a thin, flowing water-glow texture that felt as though it adhered quickly when applied. It finished without stickiness, so it did not feel heavy even on days when I went through several skincare steps or used it before makeup. ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-05-12dqw-900.webp) The dropper made it easy to control the amount one drop at a time. At 30ml, it was not too burdensome to keep on a bathroom shelf or carry in a bag. ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-06-1b0r7-900.webp) ## What changes did I notice after about two weeks? ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-07-1bhnf-900.webp) ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-08-8g0gi-900.webp) After using it consistently for about two weeks, the skin tone that had looked dull seemed a little more even when I looked in the mirror, and I barely felt morning tightness underneath my skin. My makeup also seemed to apply more thinly and evenly than before. ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-09-12zid-900.webp) The day after applying it at night, my skin texture seemed smooth and looked more radiant. I did not feel much of the dryness I had worried about when using a brightening product. ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-10-1ovez-900.webp) ## Does it pill with other skincare products? ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-11-15w54-900.webp) Even when layering toner, ampoule, and serum in that order, I did not experience pilling. It also tended to absorb without conflict when used with a moisturizing cream, so it worked well in my daily routine during the dry season. ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-12-i49gl-900.webp) ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-13-1iz80-900.webp) ## Who might it suit? ![Brightening serum for dehydrated oily skin: HEEDA Glutathione](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-14-1wie2-900.webp) It may be worth considering if you want a brightening serum without a heavy feel, or if you are concerned about both inner tightness and dull-looking skin. However, the changes in tone and skin texture are observations based on my skin condition and about two weeks of use. ## Products - HEEDA Glutathione High-End Glow Brightening Serum 30ml — HEEDA - 약 2주 - 희다 스마트스토어 — 원문에 기재된 구매 링크 --- Superchart · https://superchart.com/en/@gyeonggi-meal-stops/heeda-glutathione-serum-two-week-glow-6dec/ · https://superchart.com/llms.txt