You may inhale the vapors from these oils as they rise from a bowl of water, or mix them in a base oil and use in massage. You can also wear them as perfume or mix it in your bath water.
Combinations can be more effective than using herbs individually. In bath water combine three drops of each oil: basil and cypress, thyme or rosemary, or rosemary and basil.
Add to almond or olive oil for massage three drops of each oil: thyme, rosemary, basil, and cypress.