This is Rohto's Melano CC Premium Essence, a Japanese medical-grade vitamin C serum designed for intensive spot treatment and prevention. The concentrated formula features active Vitamin C, three Vitamin C derivatives, Vitamin B6, and allantoin in a unique oil-like texture that absorbs quickly without residue. The product comes in a specialized tube with a ball-tip applicator to prevent oxidation. It's particularly effective for those concerned with hyperpigmentation, acne scars, and uneven skin tone, while also providing antibacterial and sebum control benefits.