Arbutin is a plant based compound that helps with uneven skin tone and pigmentation. Arbutin diminishes and treats pigmentation and age spots leading to a more even complexion as well as inhibiting the negative effects of UVA & UVB light. This serum has a skin whitening effect without the side effects or risk of hydroquinone and can be used with those who have sensitive skin. (If you have sensitive skin, we recommend to mix a few drops with your other daily skincare products to avoid any irritation). 5% niacinamide and hyaluronic acid keep the skin soft and moisturized.