Soldering or Desoldering, Flux is an important thing that was used for a long time in the electronics industry. The Flux soldering paste is a superior Flux that can be used in both cases Soldering or Desoldering. 

The Soldering Flux is very useful for the longevity of the soldering. The Soldered bonding will be dirt free and tough. 

However, the major problem during long term usage of soldering wire and soldering iron, the extracted fume creates problems to the eyes as well as it is very bad for health. This soldering flux is basically odor less, fume less, safe and reliable.