First, prepare 1 lemon, egg, and a small amount of baking soda. Mix egg yolks and baking soda evenly, add an appropriate amount of lemon juice, mix well, and apply on your face. After about 10 minutes, rinse off with clean water. This mask not only hydrates the skin, but also effectively adjusts the water-oil balance of our skin. It is a very good choice for friends with oily skin.