Aloe vera

Aloe vera is now widely used on facial tissues, where it is promoted as a moisturiser and/or anti-irritant to reduce chafing of the nose of users suffering hay-fever or cold.[67] It has also been suggested that biofuels could be obtained from Aloe vera seeds.[68] It can also be used to retwist dreadlocked hair, a favourite agent for vegans and those preferring natural products. Aloe vera is also used for soothing the skin, and keeping the skin moist to help avoid flaky scalp and skin in harsh and dry weather. Aloe vera may also be used as a moisturizer for oily skin.
Aloe vera extracts besides Cosmetic use, is useful in the treatment of wound and burn healing, minor skin infections, sebaceous cysts, diabetes, and elevated blood lipids in humans. These positive effects are thought to be due to the presence of compounds such as polysaccharides, mannans, anthraquinones, and lectins.
Use of topical aloe vera is not associated with significant side effects. Preliminar studies suggest taking aloe by mouth (under Doctor's observation) may lower blood glucose levels. (source wikipedia)