求翻译：将小苏打粉与玉米淀粉混合。如果你用精华油的话，可以加入少量，只需要几滴即可。因为混合粉最好是尽量干一些，而不是湿度过高或成块的粉末。是什么意思？

Will baking soda powder mixed with corn starch. If you use essential oil, adding a small amount, just a few drops. Because the powder it is better to try to do something, rather than excessive humidity or in block of powder.