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.
How to use essential oils for a cold: Because colds are respiratory infections, inhalation is the logical choice for using essential oils. An ultrasonic diffuser is a great choice because the humidity from the mist can help with dry respiratory passages.