JUMISO Niacinamide Dark Spot Serum 20% – TXA + Glutathione Brightening, Centella Soothing (1.35 fl oz)

JUMISO 20% Niacinamide Dark Spot Serum is a high-strength brightening serum that blends 20% niacinamide with tranexamic acid and glutathione to help fade dark spots, refine pores and smooth skin texture.

This lightweight, fast-absorbing serum combines three actives—niacinamide (vitamin B3), TXA (tranexamic acid) and glutathione—designed to address uneven tone, post-blemish discoloration and surface texture without a heavy or greasy feel. Formulated with a centella complex to soothe and support the skin barrier, it’s meant for everyday AM/PM use once skin builds tolerance. The texture aims to deliver a refined ‘‘glass skin’’ finish while helping control excess shine.

How does this serum target dark spots and hyperpigmentation?

The formula uses multiple brightening pathways to address discoloration at different stages. Niacinamide helps regulate pigment transfer, TXA reduces the appearance of stubborn dark marks, and glutathione provides antioxidant support to promote a brighter-looking complexion.

• 20% niacinamide for pigment regulation and barrier support
• Tranexamic acid (TXA) for targeting post-inflammatory and sun-related marks
• Glutathione for antioxidant brightening assistance
• Clinical study showed visible clarity improvement in two weeks (individual results vary)

Will this serum irritate sensitive skin or increase redness?

Although 20% niacinamide is a potent concentration, the product includes a Triple Centella Complex to soothe and calm the look of redness. It's dermatologist-tested and formulated for everyday use, but gradual introduction is recommended if you’re new to high-strength actives.

• Triple Centella Complex (Asiaticoside, Madecassic Acid, Asiatic Acid) to reduce irritation risk
• Non-sticky, non-pilling texture for comfortable layering under moisturizers
• Start with alternate days and increase frequency as tolerance builds

How does the serum affect pores, oil control and skin texture?

The lightweight formulation targets surface irregularities to create a smoother, more refined appearance. By improving texture and regulating excess shine, it helps reduce the look of enlarged pores and supports a clearer, more even canvas for makeup or bare skin.

• Helps minimize the appearance of enlarged pores and ‘‘orange peel’’ texture
• Oil-control benefits that support a matte, glass-skin finish
• Silky, fast-absorbing feel that layers well with other skincare steps

How should I incorporate this serum into my routine safely?

Use the serum after cleansing and toning, before thicker treatments and moisturizers. Because of its high active content, begin with a patch test and introduce slowly—every other night or a few times per week—then progress to daily AM/PM as tolerated. Always follow with sunscreen in the morning.

• Apply a few drops to clean, dry skin; pat gently until absorbed
• Layer sunscreen in daytime; avoid mixing with strong exfoliants initially
• Patch test first and increase use gradually to full daily application

Who this is for: This serum is aimed at people seeking a potent brightening step to reduce the appearance of dark spots, post-acne marks and uneven tone while also refining pores and controlling shine. It suits those comfortable introducing active-rich products into their routine and anyone wanting a fast-absorbing, glass-skin finish with soothing botanical support. If you have very reactive skin, consider consulting a dermatologist and introduce the product slowly.

Ingredients

Water, Niacinamide, Propanediol, Butylene Glycol, Tranexamic Acid, 1,2-Hexanediol, Hydroxyacetophenone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Glycereth-25 PCA Isostearate, Arginine, Ethylhexylglycerin, Gardenia Florida Fruit Extract, Dextrin, Trisodium Ethylenediamine Disuccinate, Glycerin, Zea Mays (Corn) Kernel Extract, Dipropylene Glycol, Glutathione, Hyaluronic Acid, Hydrogenated Lecithin, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Polyglyceryl-10 Oleate, Asiaticoside, Hedera Helix (Ivy) Extract, Madecassic Acid, Asiatic Acid, Fructan, Glucose, Paeonia Suffruticosa Root Extract, Portulaca Oleracea Extract, Allantoin, Hexylresorcinol, Artemisia Princeps Leaf Extract, Rhodiola Rosea Root Extract