Fear of consuming chemicals. Fear too.

Whenever i wash my hands using handwash it took half an hour or more during handwashing after i rub my hands after washing it with water again some foam of handwash seems to be accumulated on my hands again and again and again and so on and to get rid of that very foam i used to wash my hands till the foam clears each and every single day i use to do the same and somehow i do have a fear of consuming the chemicals which are present in the foam that occurs after each time i use to wash my hands with water every single time. Secondly, i do have the same problem when the foam of toothpaste is inside my mouth while brushing as toothpaste also contains the chemicals. Somehow the whole conclusion is what to be called as touching anything thereafter having a fear that what type of dirt is accumulated on the hands whether it is the chemicals to whom i do fear about or its something else that creates such fear too.