Storing Essential Oils

According to authors Susan Worwood and Valerie Ann Worwood of their book titled, Essential Aromatherapy...A Pocket Guide to Essential Oils and Aromatherapy ,
that when storing essential oils (EO)that you should:

(1) EO should be kept in a dark, glass bottle to protect the contents from light exposure.

(2) If the EO is stored in plastic, the plastic may fractionally dissolve leaving microscopic particles in the EO.

(3) There is a plastic - PET - which is biodegradable, but it does not have any effect on the EO. But, the authors do not recommend keeping pure EO in them. Only acceptable way you can store EO in a plastic container if it already has been diluted with a carrier oil.

(4) EO are volatile, which means they evaporate. Make sure the caps/lids are kept on tight at all times.

(5) Always replace lids on either EO or diluted EO in order to prevent evaporation and oxidation.

(6) Keep EO in a cool, dry place. And make sure that there is no damp or direct heat near your EO that means that your bathroom is not a good place to store your pure or diluted EO. The reason why? Bathrooms get damp and hot when used for bathing on a regular basis. Cupboards are the ideal place for storage.

(7) EO are flammable which means that can easily catch fire. Do not dispose of a tissue that you may have wiped up a spill of EO. Or do not place that tissue in a bin with other materials that may catch fire. Also, do not leave the tissue in direct heat like near a sunny window because that cause the tissue to catch fire.