Not possible

hi.. dark spots on the face or hyperpigmentation is caused due to various reasons like sun exposure, acne, post acne marks,stress and hormonal imbalance. So treating it overnight is a difficult thing. U need to make certain changes in your lifestyle like - hydrating yourself with plenty of fluids - drinking fluids will help flush the toxin ang give a clearer skin - avoid direct sun exposure and apply a sunscreen with a good spf everytime u step out - u can try home remedies like applying lemon/curd/tomatoes/aloe vera that will help lighten the skin U can also consult with a dermatologist so that he can examine ur spots and prescribe u with ointments and suitable face washes Advance treatments like skin peeling and laser can also be done