Your location will impact how you need to use the sew cream on your handpan. If you live in a humid climate, you will have to use the cream more frequently than someone who lives in a more dry climate. Humidity and salty air, skin oils, and the acidity of sweat can cause rust on the surface. Sew professional cream was created for our unique metal. Sew Handpan uses heat treated steel to help prevent rust. Put about 10 drops of the cream on the handpan and clean the surface with a dry cloth or multipurpose paper. If you play your handpan often, clean it 1-2 times a month.