soy wax 
two layers 
two layers
not close to the cup wall
use hot-air gun to make the container warm
Melt the top of the first layer of wax with a hot-air gun and pour in the second layer of wax
essential oil is easy to evaporate under high temperature, frangrance oil is better
try：When the melted wax oil cools slowly and flocs appear, pour in the essential oil
