very easy to use. protects electrical components from heat damage when soldering. I use it to repair refrigerators and use it on changeover valves and pressure switches. ALSO used on my burn sustained on the inside of my wrist when I accidentally touched the surface of the hot pipe. I had a second degree burn and my first aid kit was in my van. So before I grab the kit, I apply some of this paste to the burn. the pain stopped immediately.