Please be aware that all of the citrus oils have the potential to cause sun sensitivity. Do not apply to the skin and then expose yourself to ultraviolet rays, whether outside, with a tanning bed, or in any other form, for at least 12 hours. I like to diffuse citrus oils in my diffuser when I am feeling depressed. When diffusing oils, use a COLD diffusing method. Never heat your therapeutic grade oils.
Heating destroys the therapeutic qualities.
If you don't have a cold diffuser, you can put some oil on a cotton ball or tissue. You can even mix oil in a spray bottle with water and spritz in the air. Contrary to popular belief, it is not merely the aroma of essential oils imparts their effects. Certainly, the aroma has a lot to do with the psychological and spiritual effects the oils have, but if it were just about their scents, synthetic fragrance oils would suffice. Get the oils on your body to get the full effect of the oil.