{"product_id":"cosrx-the-alpha-arbutin-2-discoloration-care-serum-50ml-mirai-skin-cosrx-the-alpha-arbutin-2-discoloration-care-serum-50ml","title":"COSRX The Alpha-Arbutin 2 Discoloration Care Serum 50ml","description":"\u003ch2\u003eCOSRX The Alpha-Arbutin 2% Discoloration Care Serum: Daily Brightening Serum for Hyperpigmentation\u003c\/h2\u003e\n\u003cp\u003eThis is COSRX's dedicated brightening serum, built around 2% alpha-arbutin, a gentle tyrosinase inhibitor that softens hyperpigmentation and evens skin tone without the irritation associated with hydroquinone or high-strength vitamin C. At $26.00 for 50ml, this is COSRX's affordable answer to the overpriced dedicated brightening serums in the luxury tier. The formulation is daily-wearable, safe for sensitive skin, and stacks well with vitamin C or retinol in an anti-hyperpigmentation routine.\u003c\/p\u003e\n\u003cp\u003eAlpha-arbutin is the gold-standard gentle brightening ingredient in modern Korean formulations. Unlike hydroquinone (restricted in many countries) or kojic acid (more irritating), alpha-arbutin delivers meaningful tyrosinase inhibition at low concentrations with minimal side effects. 2% is the standard effective dose in daily-use products; higher concentrations exist but rarely outperform 2% for most users.\u003c\/p\u003e\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eAlpha-arbutin at 2% inhibits tyrosinase, the enzyme that produces melanin in skin. Over 4 to 12 weeks of daily use, new melanin production slows, and existing hyperpigmentation gradually softens as skin naturally turns over. Works best on post-inflammatory hyperpigmentation (PIH) from acne, mild melasma, and sun spots. Less effective on genetic freckles or deep dermal pigmentation. Supports the brightening work of vitamin C and niacinamide.\u003c\/p\u003e\n\u003ch3\u003eWho It's For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-acne hyperpigmentation (PIH):\u003c\/strong\u003e Primary target. Dark marks left after acne heal faster with daily use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSun-exposure dark spots:\u003c\/strong\u003e Gradually softens existing sun damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarly melasma:\u003c\/strong\u003e Works alongside SPF for mild-to-moderate cases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitive skin brightening needs:\u003c\/strong\u003e Alpha-arbutin is gentler than hydroquinone or high-strength L-ascorbic acid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBudget-conscious brightening shoppers:\u003c\/strong\u003e $26 is strong value for a 2% alpha-arbutin serum.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolume: 50ml\u003c\/li\u003e\n\u003cli\u003ePrice: $26.00\u003c\/li\u003e\n\u003cli\u003eHero active: alpha-arbutin 2%\u003c\/li\u003e\n\u003cli\u003eTexture: lightweight serum, non-sticky\u003c\/li\u003e\n\u003cli\u003eFragrance: none or very mild\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eApply twice daily after cleansing and toner, before moisturizer and sunscreen. 2 to 3 drops per application. SPF is mandatory during the daytime; brightening serums without sun protection can backfire because UV exposure counteracts the tyrosinase inhibition. 50ml lasts approximately 3 to 4 months with twice-daily use.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eHow does this compare to The Ordinary Alpha Arbutin 2%?\u003c\/h4\u003e\n\u003cp\u003eSimilar active concentration, different formulation. The Ordinary is stripped-down with minimal supporting ingredients. COSRX includes additional hydrators and skin-conditioning extracts, giving a nicer feel and slightly better tolerance. Pure-active minimalists prefer The Ordinary; COSRX is the more refined daily-use option.\u003c\/p\u003e\n\u003ch4\u003eCan I use this with vitamin C?\u003c\/h4\u003e\n\u003cp\u003eYes. They work through overlapping but complementary mechanisms. Use vitamin C in AM and alpha-arbutin in AM and PM, or stack them both in the same routine. Layer in order of pH: vitamin C first (lower pH), then alpha-arbutin.\u003c\/p\u003e\n\u003ch4\u003eHow long until I see results?\u003c\/h4\u003e\n\u003cp\u003eInitial tone brightening: 3 to 4 weeks. Visible fading of PIH: 6 to 8 weeks. Full benefit for existing dark spots: 12 to 16 weeks. Consistency with daily SPF is what determines results.\u003c\/p\u003e\n\u003ch4\u003eWill this work on deep melasma?\u003c\/h4\u003e\n\u003cp\u003ePartially. Deep dermal melasma typically requires prescription treatment (hydroquinone, tretinoin, or procedural interventions). For superficial or mild melasma, alpha-arbutin helps as an adjunct to SPF and dermatologic care.\u003c\/p\u003e\n\u003ch4\u003eIs it safe for pregnancy?\u003c\/h4\u003e\n\u003cp\u003eAlpha-arbutin is generally considered safe during pregnancy, unlike hydroquinone. Always confirm with your OB. If you want the safest pregnancy-era brightening, pair with niacinamide and consistent SPF.\u003c\/p\u003e\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cp\u003ePair with COSRX Sun Stick for sun protection, or add a vitamin C serum for stacked brightening. Browse the COSRX collection or related: best Korean brightening products, Korean serums.\u003c\/p\u003e\n","brand":"mirai-skin","offers":[{"title":"Default Title","offer_id":51741070950688,"sku":"51788893553012","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/8333\/4432\/files\/723cc93dd3b919ea7fccd56c49f00d6b.webp?v=1779694350","url":"https:\/\/usmirai-skin.com\/products\/cosrx-the-alpha-arbutin-2-discoloration-care-serum-50ml-mirai-skin-cosrx-the-alpha-arbutin-2-discoloration-care-serum-50ml","provider":"usmirai-skin.com","version":"1.0","type":"link"}