UVC and most of UVB are absorbed by the ozone layer in the earth's stratosphere. Ultraviolet light causes sunburning and damages the skin's elastic protein, collagen. It is also a major factor in the development of the skin cancers rodent ulcer (BASAL CELL CARCINOMA), MALIGNANT MELANOMA and SQUAMOUS CELL CARCINOMA.
Burners and vaporizers In vapor therapy, lemon oil can be used for colds, voice loss, flu, depression, stress, lack of energy and fatigue. It furthermore relieves irritation and also helps improve concentration, lifts the spirits, clears the mind and helps in decision making.
The one I listed in the ingredient list is 100% pure lemon eucalyptus oil. Also note that Lemon Eucalyptus Essential Oil is different than the US designated Oil of Lemon Eucalyptus (OLE or Citriodiol) which is a refined version with increased concentration of PMD (explained in list of natural mosquito repellent oils).