Mineral oil. This product gives very good results, only you have to be very careful when using it, it is only recommended to make this tip twice a year and once you rub it on the leaves, you should not be in direct contact with the sun. In an atomizer mix three parts of water for one of mineral oil, stir perfectly and spray the leaves of the plants. With a dry cloth, rub the leaves of the plants.
Note: This oil can be found in the baby area.