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 Use a humidifier. Especially at night. Keeping the nasal passages moist brings a lot of sinus headache relief. Cool mist is best.  To really give it a boost, add Breathe. It's an essential oil blend that will keep your respiratory system clear. Wonderful stuff!