Deoxyarbutin is primarily used in cosmetic and skincare formulations as a skin-lightening agent. It works by inhibiting tyrosinase, the enzyme responsible for melanin production, which helps reduce hyperpigmentation, dark spots, and uneven skin tone. Compared to other whitening agents like hydroquinone, deoxyarbutin is considered more stable and less irritating, making it suitable for long-term use in sensitive skin products. It is commonly found in serums, creams, and lotions aimed at achieving a brighter, more even complexion. Its effectiveness and favorable safety profile have made it a popular ingredient in over-the-counter and clinical skincare lines.