Do It Yourself! Natural Beauty 101: Self.com : Clear Complexion: 1tbsp. citrus juice and 1tbsp. baking soda. Combine the citrus juice and baking soda, it will fizz a lot so stir until the bubbling lessens. Apply to your face and then leave on for 20min. and then rinse. Benefits: citrus exfoliates and brightens and helps keep pores clean. Baking soda takes away dead skin cells and helps to prevent blackheads.