Toxic Chemicals in the Home: There are many household chemicals which are very poisonous.  Household chemical reactions are not uncommon, as there are  not only many invisible toxic chemicals in the environment, but those  to be found  in many products you have around the house, from cleaning products to that face cream you smear on your face daily. There are many household chemicals which could cause reactions: 884 different toxic chemicals have been found in personal care products alone. Here are some of the most common household chemicals which you would be best to avoid using, whether they be found in cleaners or make-up, or ...