Rohto Mentholatum Hada Labo Perfect Tranexamic Acid Serum is a dermatologically tested formula designed to tackle dark spots and pigmentation. This 30ml serum features tranexamic acid, which inhibits melanin production and fades existing hyperpigmentation. Its lightweight, fast-absorbing texture suits all skin types and is gentle enough for daily use. With consistent application, it reveals a brighter, more even, and luminous complexion, free from dark spots.