medicube - AGE-R Glutathione Glow Serum 50ml

medicube AGE-R Glutathione Glow Serum in the 50ml size — the same 50,000ppm glutathione formula as the 30g, in the bottle that makes twice-daily use sustainable.

The value size of the line’s anchor

Same formula, two thirds more product. If the 30g convinced you — or you already know your skin gets along with glutathione and niacinamide — this is the size to run a proper twelve-week course on.

50,000ppm glutathione

Ppm is parts per million, so this is 5% glutathione — a genuinely high concentration for an ingredient usually dosed in fractions of a percent. Glutathione is the antioxidant Korea has used for years for radiance, now defining the tone category in the US.

Niacinamide, adenosine, bifida ferment

Niacinamide is one of the best-studied ingredients for the look of uneven tone; adenosine is a long-established Korean fine-line ingredient; bifida ferment supports a resilient-feeling barrier while the actives work.

Booster-H technology

medicube’s patented delivery system, reported by the brand to enhance efficacy up to 3X. Designed to pair with the brand’s AGE-R devices as a conductive serum — and complete on its own without one.

Realistic timelines

Brightening is gradual even at 5%: expect eight to twelve weeks of daily use, with sunscreen every morning. Without SPF, new pigment forms as fast as old pigment fades.

How to use

After toner, apply an appropriate amount and pat gently into skin until absorbed. Follow with moisturizer, and sunscreen in the morning. Use morning and evening. If using an AGE-R device, apply the serum first.

Frequently asked questions

Is this the same formula as the 30g?

Yes — identical formula, larger bottle, better value per ml.

How long does 50ml last?

Around three months of twice-daily use — conveniently, the length of a full brightening course.

Can I use it with vitamin C or retinol?

Yes — niacinamide and glutathione layer well with both. Introduce one new active at a time.

Is 5% glutathione irritating?

It’s an antioxidant rather than an exfoliating acid, so it’s well tolerated. Patch test if your skin reacts easily.

Do I need the medicube device?

No — the device may aid absorption, but the serum works fully on its own.

Pairs well with

Prep with the AGE-R Glutathione Glow Toner. Browse Korean serums, anti-aging and brightening picks.