APLB - Glutathione Niacinamide Ampoule Serum 40ml

APLB Glutathione Niacinamide Ampoule Serum pairs 1,000ppm glutathione with 20,000ppm niacinamide — a do-it-all Korean ampoule for skin that looks dull and uneven.

Glutathione, K-beauty’s brightening ingredient

Glutathione is an antioxidant that has been popular in Korea for years and is now gaining serious ground in the US. It’s one of the ingredients defining the tone-focused category in 2026.

20,000ppm niacinamide — what that means

Ppm is parts per million, so 20,000ppm works out to 2% niacinamide. That’s a well-tolerated concentration — high enough to matter for tone and texture, low enough that most skin doesn’t react to it.

Hyaluronic acid and beta-glucan

Two humectants working together. Beta-glucan is a polysaccharide from oats, yeast or mushrooms, used as a soothing moisture-binder alongside hyaluronic acid.

Collagen and adenosine

Adenosine is one of the most established ingredients in Korean formulas aimed at fine lines. On collagen, an honest note: topically it works as a surface humectant — the molecule is too large to rebuild anything deeper, regardless of what any label says.

Cica complex for comfort

Centella keeps the formula comfortable on skin that reacts to brightening actives — which is a common problem with this category.

Realistic timelines for tone

Brightening is slow work. Expect eight to twelve weeks of daily use, and only with sunscreen every morning — new pigment forms as fast as old pigment fades without it. Any product promising faster is overselling.

How to use

After toner, dispense an appropriate amount and pat gently into slightly damp skin across face and neck until absorbed. Follow with moisturizer, and sunscreen in the morning. Use morning and evening.

Frequently asked questions

What is glutathione in skincare?

An antioxidant used in formulas aimed at radiance and an even-looking complexion. Long established in Korea, newer to the US market.

Can I use it with vitamin C?

Yes — antioxidants layer well together. Introduce one new active at a time so you know what your skin is responding to.

Is it suitable for sensitive skin?

The cica complex is there for exactly that. Patch test first if your skin reacts easily.

Does it help with dark spots?

It works on how they look, gradually. Sunscreen determines whether that progress holds — it matters more than the serum.

Where does it go in my routine?

After toner, before moisturizer. Pat into damp skin, then seal.

Pairs well with

Continue with the Glutathione Facial Cream. Browse niacinamide, brightening and Korean serums.