Brightening serums are topical skincare products designed to address hyperpigmentation, which is the darkening of certain areas of the skin. By employing ingredients like vitamin C, niacinamide, and alpha-arbutin, these serums work to inhibit melanin production, reduce existing pigmentation, and exfoliate dead skin cells. Their use can lead to enhanced skin hydration, a more even skin tone, and reduced dark spots, making them particularly beneficial for individuals with hyperpigmentation.