Early seafarers stocked up with fresh lemons before a long voyage to help prevent scurvy and purify the ship;s drinking water. It's astringent and antiseptic properties were fully appreciated in the first aid kit and used to treat cuts, bruises and insect stings.
Therapeutic effects: Lemon is highly antiseptic and astringent, and so is naturally used for skin complaints including boil and warts. Also a good for lowering blood pressure, colds, digestive problems, fever and gallstones.
Uses: Inhalation, baths and massage. Lemon, as with most citrus oils, is a good cleanser inside and out. Use in skin-care preparations for oily skin. Evaporated in a fragrancer it will help colds and act as an insect repellent.
Other popular ways apart from the above include, diffusers, on your pillow at night, meditation, car air fresheners and in steam / saunas.