COSRX 2% Alpha Arbutin Brightening Face Serum, 1.7 fl oz — Niacinamide & Tranexamic Acid

Designed for daily use, this targeted treatment concentrates brightening actives in a fast-absorbing base to address post-acne marks, age spots and uneven pigmentation. The formula layers easily with other skincare and provides soothing hydration without a sticky residue, making it suitable for a range of skin types including sensitive and acne-prone skin.

How does this serum target stubborn dark spots?

The core brightening ingredient, alpha arbutin at 2%, works to inhibit pigment formation while tranexamic acid and glutathione support overall clarity. Together they help fade discoloration over repeated use without aggressive exfoliation. Niacinamide improves texture and helps the skin look more uniform as marks fade.

• 2% alpha arbutin to reduce melanin production in targeted areas
• Tranexamic acid to calm and correct visible discoloration
• Glutathione adds antioxidant support for skin clarity
• Niacinamide refines texture and minimizes the appearance of fine lines

Can I use this serum with other treatments or actives?

This COSRX formula is designed for compatibility with most routines but requires mindful layering. Apply after cleansing and light hydrating toners, and before heavier creams or oils. If you use strong exfoliants or prescription actives, alternate or patch-test to avoid irritation.

• Apply on clean skin before moisturizers and sunscreens
• Avoid mixing simultaneously with high-strength acids or retinoids without testing
• Sun protection is essential when treating pigmentation
• Layering 2–3 targeted applications can be used for spot treatment as needed

How quickly will I see results and how should I use it daily?

Visible improvement depends on your skin and the depth of pigmentation; many users notice gradual brightening over several weeks. For daily use, dispense an appropriate amount after cleansing and gently spread across the face, or apply extra layers on darker spots as a targeted boost. A patch test is recommended prior to first use to confirm tolerance.

• Use once or twice daily depending on sensitivity
• Apply a thin layer for full-face use, or 2–3 layers on spots
• Allow serum to absorb before following with moisturizer and SPF
• Stop and consult a physician if irritation occurs

Is this suitable for sensitive or acne-prone skin?

The formulation emphasizes gentle hydration and a non-sticky finish, which helps reduce the chance of irritation for many users. Its lightweight texture absorbs quickly and is often recommended for acne-prone skin since it targets post-inflammatory hyperpigmentation rather than provoking oiliness. Still, perform a patch test to ensure your skin responds well to active ingredients.

• Fast-absorbing, non-greasy texture for layered routines
• Soothing base to support sensitive or acne-prone skin
• Patch testing advised to verify skin compatibility
• Works well as a focused treatment for post-acne marks

Who is this for: This COSRX 2% Alpha Arbutin serum is aimed at people seeking to fade hyperpigmentation, post-acne marks and age spots without harsh physical exfoliation. It suits those who want a potent brightening concentrate that layers into existing routines—especially anyone with sensitive or acne-prone skin looking for a non-irritating option. Remember to pair with daily sun protection and consult a professional for severe pigmentation concerns.