Silica - Part 1 Some people think this is dangerous and others that is just an usless piece of trash in a small bag. The true is that this is a very usefull thing, but what is this... is a solid absorbent chemical used to keep in good condition some stuff, how? it absorbs humidity and keeps small places dry. It is not dangerous, you can touch but, it's not for ingest. I t was originally used for keeps medicines dry during the world war II. #gearcare #humidity #musicsian