If you have dull or uneven skin tone, look for a Vitamin C day cream that is formulated with brightening ingredients such as niacinamide or alpha hydroxy acids (AHAs). These ingredients can help exfoliate the skin, reduce the appearance of dark spots and hyperpigmentation, and improve skin texture. Additionally, look for a cream with a moderate concentration of Vitamin C (around 10-15%) to help brighten the skin and improve overall radiance.