Check ingredients and labels✔️ Tranexamic acid (TXA) and niacinamide are common brightening ingredients; vitamin C lines focus on glow. Look for "기미" (melasma), "잡티" (spots), "미백" (brightening) and "톤업" (tone-up). A Dongkook toning cream double set has 2,565 reviews (4.9) with patches. Wear sunscreen by day.