Wikipedia says, "Aloe vera is a succulent plant species. The species is frequently cited as being used in herbal medicine since the beginning of the first century AD. Extracts from A. vera are widely used in the cosmetics and alternative medicine industries, being marketed as variously having rejuvenating, healing, or soothing properties."
A recent article entitled, "25 Amazing Benefits Of Aloe Vera For Skin, Hair And Health" by Arshi Ahmed (see link) highlights the many benefits of Aloe Vera.
Some excerpts: "Aloe Vera, also known as the ‘plant of immortality’ by the ancient Egyptians, was used for its healing properties since time immemorial. Aloe Vera plants are commonly found in the African regions and belong to the family of Xanthorrhoeaceae, known for its succulent or fleshy leaves. This nontoxic plant stores water in its leaves and survives in low rainfall and arid regions. Aloe Vera leaf looks unique; it doesn’t have any stems and the edges of leaves have tiny spikes.
Aloe Vera is considered to be a miracle plant. Since, it contains phytochemicals and other nutrients which are beneficial for hair, health and skin. Aloe Vera extracts are also used in food and energy drinks. It is a very good habit to drink aloe vera juice on empty stomach every morning, to get maximum benefits of this plant.
Aloe Vera is sold as gel, powder and juice. You can also make fresh aloe juice at home by cutting the leaf and extracting the aloe gel from it. There are different species of the aloe plant, but Aloe Barbadensis Mill is the most popular and widely used variety of aloe vera. The scientific epithet ‘vera’ means true and genuine. So aloe vera derived from the plant will have a tangible impact on the health, hair and skin. You can see your skin glow after using aloe vera, and a glowing skin reflects good health."
http://en.wikipedia.org/wiki/Aloe_vera
http://www.stylecraze.com/articles/amazing-benefits-of-aloe-vera-for-skin-hair-and-health/