Vitamin C has multiple benefits on skin from Brightening, anti ageing to hydration. It also helps reduce hyperpigmentation and blemishes. Vitamin C when applied externally also boosts production of collagen making your skin plump and hydrated.
Niacinamide is a form of Vitamin B3 and is known for skin lightening effect as it is clinically proved to reduce hyperpigmentation. It also increases skin hydration and improves skin elasticity