Il Hwa uses whole root processing, without peeling, as well as utilising its own proprietary low heat vacuum extraction technology to ensure the maximum levels of active ingredients are retained in the final extract. 

The roots are harvested at the optimum time of between 4 to 5 years which is in contrast to most other companies who use roots harvested from 6 years, which is more fibrous and possesses less ginsenoside density and balance.