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.
3. Eucalyptus Oil â there are a few different types. In the absence of R.C. oil, grab any kind of eucalyptus that you have and diffuse for congestion relief. 4. Thieves Oil â I donât even know where to start with Thieves oil because it helps with just about everything.
1 This is the use of essential oils on hot compress, in diffusers, or in hot water for inhalation. Standard dose is 10 drops. * 2 Caution: prolonged inhalation of concentrated essential oils can cause headaches, vertigo, dizziness, nausea, and lethargy.  Benefits: Best for respiratory, sinus problems, and headaches.