FAQs

01. Is glutathione serum good for your face?

Yes. Dark spot patches can help improve the appearance of dark spots, depending on their formula.

In a clinical evaluation, Manyo Glutathione 7 Dark Spot Serum Patch showed a 20.38% reduction in dark spots and a 14.40% improvement in skin tone evenness after seven days of use.¹


¹ Clinical evaluation conducted by Mariedm Co., Ltd., December 8 to 26, 2025, involving 20 men and women aged 22 to 39. Individual results may vary.

02. How long does it take glutathione to fade dark spots?

The time needed to see a change varies by formula and skin condition.
In a clinical test of Manyo Glutathione 7 Dark Spot Serum, surface pigmentation decreased by 21.95% after one week of use.¹


¹ Clinical evaluation conducted by Mariedm Co., Ltd., December 8 to 26, 2025, involving 20 women aged 22 to 40. The study evaluated improvements in surface and subsurface pigmentation after one and two weeks of use. Individual results may vary.

03. Can I use glutathione serum daily?

Yes, Glutathione serums intended for daily use can be part of your everyday routine if they suit your skin.

For Manyo Glutathione 7 Dark Spot Serum, follow the frequency stated on the packaging and adjust based on your skin’s response.
Individual results may vary.

04. What is the best time to apply glutathione serum?

Apply Manyo Glutathione 7 Dark Spot Serum after cleansing and toning.

Shake well before use, then apply an appropriate amount evenly across your face, focusing on areas with dark spots or uneven tone.
Gently pat until absorbed. During the day, finish your routine with sunscreen.

05. Is manyo glutathione 7 dark spot serum good?

Manyo Glutathione 7 Dark Spot Serum Patch showed a 20.38% reduction in dark spots after seven days of use in a clinical evaluation, making it worth considering for targeted dark spot care.¹
Its serum-based formula combines glutathione, niacinamide, and N-acetyl glucosamine (NAG) in a patch for selected areas of concern.


¹ Clinical evaluation conducted by Mariedm Co., Ltd., December 8 to 26, 2025, involving 20 men and women aged 22 to 39. Individual results may vary.