# Glutathione serum for dehydrated oily skin: HEEDA 2-week test - By Mira K. (https://superchart.com/en/@contents-care-diary/) - Written Dec 2, 2025 - Updated Sep 12, 2026 - Products › Beauty products - Product provided: I received the product and used it for two weeks. - English edition: https://superchart.com/en/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/ - Also in: [한국어](https://superchart.com/ko/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [日本語](https://superchart.com/ja/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [简体中文](https://superchart.com/zh-cn/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [繁體中文](https://superchart.com/zh-tw/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [Tiếng Việt](https://superchart.com/vi/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [ไทย](https://superchart.com/th/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [Bahasa Indonesia](https://superchart.com/id/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [Bahasa Melayu](https://superchart.com/ms/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) · [Español](https://superchart.com/es/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/index.md) ## In short I used HEEDA Glutathione High-End Glow Radiance Serum morning and night for two weeks on dehydrated oily skin with a weak skin barrier. Its lightweight feel and smooth wear under makeup worked well for me, while I plan to watch changes in tone and dark spots longer. ## Good to know - **Product**: HEEDA Glutathione High-End Glow Radiance Serum - **Testing period**: 2 weeks - **Skin type**: Dehydrated oily skin with a somewhat weak skin barrier - **Where to buy**: Search “HEEDA serum” on Naver *Prices as written by the tester on Dec 2, 2025 · not updated automatically* ## How did it feel on dehydrated oily skin with a weak barrier? ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-01-yr717-900.webp) ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-02-y6xbo-900.webp) I tried a glutathione serum because dark spots concerned me after sun exposure. I have dehydrated oily skin and a somewhat weak skin barrier, so I am careful when choosing new products, but I did not feel irritation while using it. ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-03-1j886-900.webp) It had a light, refreshing water-glow texture. It did not feel like it sat on my skin or leave much stickiness, and it did not pill even when I used it before morning makeup. ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-04-1pk48-900.webp) ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-05-1ktfj-900.webp) ## How did my skin tone and dark spots feel after two weeks? ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-06-v90k6-900.webp) After using it for about two weeks, my previously dull-looking complexion seemed a little clearer, with an overall impression of being about one shade brighter. When I looked in the mirror, my skin also seemed to have a natural glow. ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-07-er6lf-900.webp) ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-08-2yknh-900.webp) The dark spots around my cheeks personally seemed to fade a little, but I thought changes in pigmentation needed to be monitored over a longer period. These days, my face seems brighter even with just the serum, so I reach for tone-up cream less often. ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-09-126h9-900.webp) ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-10-1oyve-900.webp) ## Can I use it morning and night and before makeup? ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-11-7r8aj-900.webp) I incorporated it into both my morning and evening routines. On days when my face felt dry and rough, I applied a slightly more generous amount at night before bed, and it felt less dry and rough the next day. When I used it before makeup, my foundation tended not to lift and instead adhered smoothly to my skin. ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-12-p6534-900.webp) ![Glutathione serum for dehydrated oily skin: HEEDA 2-week test](https://img.superchart.com/images/heeda-glutathione-serum-two-week-glow/heeda-glutathione-serum-two-week-glow-13-10kxy-900.webp) If you are looking for a lightweight serum to apply daily, my experience may be useful. Still, my observations about changes in skin tone and dark spots are personal impressions from two weeks, so I plan to keep using it and monitor them longer. ## Products - HEEDA Glutathione High-End Glow Radiance Serum — HEEDA - 2주, 아침저녁 - 네이버 — ‘희다 세럼’ 검색 후 구매 --- Superchart · https://superchart.com/en/@contents-care-diary/heeda-glutathione-serum-two-week-glow-fad6/ · https://superchart.com/llms.txt