Chemicals are naturally found in nature.

Every plant and animal and indeed ourselves are made up of chemicals.  We naturally need them as they develop in the situation where they are found with other chemicals.

Individual chemicals are especially, even dangerously, powerful when separated from their natural neighbours that they start life with.

This is when the trouble with chemicals starts.

One constituent of tea-tree oil - phenol - has disinfectant properties. We have heard of phenolic acid found in disinfectants used to clean floors. The reason the floor cleaner is so powerful and poisonous and has to be kept out of the reach of children is because the phenol has been taken out of its natural habitat and concentrated in a product.

Man then decided to investigate the individual chemical further and split it, found the atom and split that into protons, nutrons and electrons. All very interesting but the discovery led to nuclear bombs as well as nuclear energy.

Then man decided to put parts of one chemical with another so creating synthetic chemicals.

Vitamin E is required for fertility. It was noted in a trial that synthetic Vitamin E had little or no effect on fertility while natural vitamin E produced good results.

Vitamin C works better in the body when it is with its natural parts produced when nature grows an orange or a lemon - bioflavanoids and rutin to name a few.

It is not chemicals that are unnatural but the unnatural use of them to produce unnatural substances.