Medicube
MEDICUBE TXA Niacinamide Serum
MEDICUBE TXA Niacinamide Serum
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MEDICUBE TXA Niacinamide Serum
Brighten and refine the look of uneven skin with Medicube TXA Niacinamide Serum, a lightweight daily serum designed to help improve the appearance of dark spots, post-acne marks, dullness, and uneven tone while supporting balanced, hydrated skin.
Size: 30 ml / 1.01 fl. oz.
Formulated with tranexamic acid, niacinamide, and arbutin, this brightening serum helps target the look of discoloration while promoting a clearer, smoother, and more radiant-looking complexion. Tranexamic acid helps support more even-looking skin tone, niacinamide helps strengthen the skin barrier and refine texture, and arbutin helps improve the appearance of uneven patches for a fresher, brighter look.
This fast-absorbing formula is a great choice for anyone looking for a K-beauty brightening serum, TXA serum, or a daily serum for dark spots and acne marks. With continued use, skin looks clearer, more balanced, and more luminous without feeling heavy or greasy.
Overview
Medicube TXA Niacinamide Serum is a brightening treatment created for skin that looks dull, uneven, or marked by discoloration. Designed for daily use, it helps support clearer-looking skin while maintaining hydration and overall skin balance for a healthier-looking glow.
Study Results
According to the brand's reported results, this serum showed:
- 2.045% improvement in skin clarity after 72 hours
- 18.1% improvement in hydration after 72 hours
Individual results may vary.
Key Benefits
- Helps improve the look of dark spots and post-acne marks
- Supports a brighter, more even-looking complexion
- Helps refine the look of rough skin texture
- Formulated with tranexamic acid, niacinamide, and arbutin
- Lightweight, fast-absorbing texture
- Suitable for daily skincare routines
How to Use
Apply a few drops to the desired area, then gently spread and pat until absorbed. Follow with moisturizer. If dryness is a concern, pair with a nourishing cream.
Explore the full lineup and Shop MEDICUBE today.
TXA 5% + Niacinamide 10%: A Brightening Duo Worth Knowing
Post-breakout marks and dull, uneven patches are some of the most stubborn skin concerns to address. The MEDICUBE TXA Niacinamide Serum ($26, 30 ml) pairs 5% tranexamic acid with 10% niacinamide, two of K beauty skincare's most talked-about brightening ingredients, in one lightweight daily serum. It's a clean, no-fuss step for anyone chasing a clearer, more even-looking glow.
Tranexamic Acid vs. Niacinamide: What Each One Does
- Tranexamic Acid (TXA 5%): A brightening active that helps interrupt the look of melanin formation for a more even-toned complexion. It's gentler than some other brightening actives and well-tolerated for regular use.
- Niacinamide (10%): The K-beauty all-rounder. At 10%, it targets the look of discoloration and pores while supporting the skin barrier and hydration.
- Arbutin: A plant-derived brightener that complements the TXA and niacinamide for a fuller brightening effect.
What Else Is Inside
- Adenosine: For a firmer-looking skin appearance.
- Panthenol: Vitamin B5 to help skin stay comfortable and hydrated.
- Sodium Hyaluronate and Hyaluronic Acid: To keep skin feeling plump and dewy, not stripped.
- Allantoin: A calming ingredient to help the formula feel soothing on skin.
How to Layer It Into Your Routine
Apply a few drops after cleansing and toning, then pat in gently. Let it absorb before your moisturizer. It's lightweight enough to layer under most creams without pilling. Follow in the morning with SPF to protect your brightening progress — UV exposure is one of the main things that brings dark spots back.
For a complete brightening routine, pair it with the MEDICUBE TXA Niacinamide Capsule Cream ($26) as your moisturizer — the capsule cream carries the same brightening actives so every step of the routine is working in the same direction. Finish the morning with the MEDICUBE Glow Collagen Sunscreen SPF 50 ($21), one of the best Korean sunscreen picks for a glowing, no-cast finish.
Compare: TXA Niacinamide Serum vs. Kojic Acid Turmeric Capsule Serum
- MEDICUBE TXA Niacinamide Serum ($26): A lightweight daily dropper serum for overall tone, dark spots, and post-acne marks. TXA + niacinamide + arbutin.
- MEDICUBE Kojic Acid Turmeric Capsule Serum ($26): A capsule serum targeting uneven patches and spots with kojic acid and turmeric. Good for more specific spot-focused brightening.
Who Will Love This Serum
- Anyone focused on the look of post-acne marks and dark spots
- Skin that looks dull or uneven after sun exposure or breakouts
- People who want a gentle but effective daily brightening serum
- K beauty skincare fans building a TXA + niacinamide routine
- Anyone stepping up from a basic vitamin C serum to a targeted brightening formula
TXA Serum Questions, Answered
What is tranexamic acid and is it safe for daily use?
TXA is a brightening active known for being gentle and well-tolerated. It's suitable for daily use for most skin types, including sensitive skin.
Can I use this with other actives?
TXA and niacinamide are generally easy to layer with most routines. Avoid using it at the same time as high-strength acids or retinoids unless your skin is accustomed to both.
Do I need sunscreen when using this?
Yes. Brightening actives work best when UV exposure is minimized, so daily SPF is essential.
Can I use it morning and night?
Yes. Apply it after toning and before your moisturizer, morning and evening.
How big is the bottle?
Each bottle holds 30 ml (1.01 fl. oz.).
Is this authentic MEDICUBE?
Yes! SayHelloToGlow.com is a Korean skincare website offering authentic Korean skincare brands and Korean beauty products, including MEDICUBE.

Collapsible content
How To Use:
Apply a few drops to the desired area, expanding as needed.
Pro Tips :
Pair with Booster Pro for better absorption
If you have concerns regarding dryness, finish with medicube Capsule Cream.
Ingredients:
Water, Niacinamide, Glycerin, Butylene Glycol, Tranexamic Acid, Arbutin, Diethoxyethyl Succinate, Chlorphenesin, C12-14 Alketh-12, Ethylhexylglycerin, Xanthan Gum, Carbomer, Adenosine, Disodium EDTA, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, 1,2-Hexanediol, Panthenol, Cyanocobalamin, Betaine, Coccinia Indica Fruit Extract, Rosa Centifolia Flower Oil, Ferulic Acid, Corallina Officinalis Extract, Pentylene Glycol, Glutathione, Hydrolyzed Hyaluronic Acid, Hydrolyzed Sodium Hyaluronate, Dimethylsilanol Hyaluronate, Hyaluronic Acid, Potassium Hyaluronate, Sodium Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Sodium Hyaluronate Crosspolymer, Sodium Hyaluronate Dimethylsilanol, Sodium Acetylated Hyaluronate, Acetyl Tetrapeptide-5, Hexapeptide-9, Palmitoyl Tripeptide-5.