It's Skin - Glutathione Shot B3 Anti Discoloration Serum 30ml

It’s Skin Glutathione Shot B3 Anti Discoloration Serum concentrates 5,000ppm glutathione with vitamin B3 — a watery brightening serum aimed squarely at dark spots and dull tone.

5,000ppm glutathione

Ppm is parts per million, so this is 0.5% glutathione — a solid working concentration for the antioxidant Korea has used for years for radiance, and the number the “Shot” in the name refers to.

B3 is niacinamide

The other half of the name: vitamin B3, one of the best-studied ingredients for the look of uneven tone and discoloration. The glutathione–niacinamide pair is the defining brightening duo of the moment.

Anti-discoloration, honestly framed

The formula targets how hyperpigmentation and dark spots look — gradually, over eight to twelve weeks of daily use. Sunscreen every morning decides whether that progress holds; new pigment forms as fast as old pigment fades without it.

Watery, layerable texture

Absorbs without stickiness — the texture detail that makes a treatment serum easy to keep using twice a day, and easy to layer under moisturizer and makeup.

Hydration built in

Dull skin is usually also dehydrated skin — water-poor skin reflects light badly. The formula replenishes moisture alongside the tone work rather than leaving hydration to the next step.

How to use

After toner, apply an appropriate amount to face and neck and pat gently until absorbed. Follow with moisturizer, and sunscreen in the morning. Use morning and evening.

Frequently asked questions

How long until dark spots improve?

Expect eight to twelve weeks of consistent use with daily sunscreen. Early glow and hydration show much sooner.

Can I use it with vitamin C or retinol?

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

Is it suitable for sensitive skin?

Both actives are well tolerated, and the watery formula avoids heaviness. Patch test if your skin reacts easily.

Serum or toner from this line — which first?

The serum is the concentrated treatment; the toner is the hydrating prep. Together they cover both steps.

Where does it go in my routine?

After toner, before moisturizer.

Pairs well with

Prep with the Glutathione Shot B3 Toner. Browse Korean serums, niacinamide and pigmentation care picks.