Scientific laws are considered established and universally applicable (to certain class of things or phenomenon under appropriate conditions) but not necessarily definitive. Also called laws of science.
Afflictions of the respiratory system include irritation and infection of the ears, nose and throat. Respiratory problems also may involve congestion, which can be decreased by inhaling rosemary (especially the verbenone type), hyssop (use var. decumbens only), tea tree, eucalyptus, lavender or peppermint.
essential oil diffuser blends, diffusers for essential oils, types of headache, essential oils for headache, essential oils diffuser blends, it works essential oils, aromatherapy diffuser, dark room, essential oil for headache.