Dr. C. Tuna Lumi Radiance Brightening Serum 30ml is a high-potency brightening serum delivering a concentrated dose of luminosity-enhancing actives deep into the skin to target stubborn hyperpigmentation, age spots, and overall dullness at their source. Stabilized vitamin C, arbutin, and advanced melanin-inhibiting compounds work at the cellular level to interrupt excess pigment production, accelerate the fading of existing dark spots, and promote a more uniform, radiant skin tone over time. The lightweight, water-based texture absorbs instantly without residue, allowing it to layer seamlessly under the Lumi Radiance cream and other products for a comprehensive brightening protocol. Antioxidant and anti-inflammatory botanicals soothe the skin while protecting against further pigmentation triggered by UV exposure, blue light, and environmental pollution. This 30ml bottle provides weeks of intensive brightening treatment for those seeking transformative results in skin clarity, luminosity, and overall evenness.