A Korean glutathione brightening serum from Numbuzin — extraordinary active concentrations: 604,074ppm Lingonberry Extract (over 60% of the formula), 50,000ppm Niacinamide (5%), and 40,000ppm Tranexamic Acid. Plus a full Glutathione antioxidant network with stable Vitamin C. Completed low-irritation testing with a 0.00 irritation index — suitable for sensitive skin. Fragrance-free. Vegan. 30ml.

• Lingonberry 604,074ppm — 60%+ Antioxidant Base — the base of this serum is Lingonberry Fruit Extract at over 60% concentration. Rich in natural Vitamin C, antioxidants, and polyphenols. Brightens dull skin and protects against oxidative stress that causes uneven tone. One of the highest botanical extract concentrations in any K-beauty serum.
• Niacinamide 5% + Tranexamic Acid 4% — Dual Brightening Powerhouse — Niacinamide at 50,000ppm visibly fades dark spots, minimizes pores, and strengthens the barrier. Tranexamic Acid at 40,000ppm targets stubborn hyperpigmentation and post-acne marks. Together with Alpha-Arbutin they create a multi-pathway brightening effect that's more effective than any single brightener alone.
• Glutathione + Stable Vitamin C — Antioxidant Network — Glutathione is a master antioxidant that delivers Vitamin C more efficiently through an oxidation-reduction network. 3-O-Ethyl Ascorbic Acid (stable Vitamin C) brightens without the irritation or instability of pure L-Ascorbic Acid. Together they neutralize free radicals and support a brighter complexion.
• Panthenol 5% + Ceramide NP + Beta-Glucan — Barrier Protection — three barrier-support ingredients that keep skin hydrated, comfortable, and resilient throughout the brightening process. No dryness, no irritation. This is what makes this serum safe for sensitive skin despite the high active load.
• 0.00 Irritation Index — Sensitive Skin Safe — clinically tested at a perfect 0.00 irritation score. Despite containing Niacinamide, Tranexamic Acid, Vitamin C, and Glutathione at high concentrations, the formula is gentle enough for daily use on sensitive and reactive skin.

After cleansing and toning, apply 3–5 drops and gently spread over face. Follow with moisturizer. Use SPF in the morning. Fragrance-free. Vegan. 30ml.

More from Olive Kollection
Shop the full Numbuzin collection, browse our serums and ampoules, or find more for hyperpigmentation.

Authentic Korean skincare at Olive Kollection since 2018 — free US shipping on orders $40+.