Detailed answer

While vitamin K has been proposed as a treatment for hyperpigmentation, there is insufficient scientific evidence to support its effectiveness. Hyperpigmentation is a complex condition that involves excess melanin production, and it is typically treated with ingredients like hydroquinone, retinoids, azelaic acid, or topical corticosteroids. These ingredients target different stages of melanin production and distribution in the skin. It is advisable to consult with a dermatologist or skincare professional for an appropriate treatment plan based on the severity and underlying cause of hyperpigmentation.