Aloe vera (aloe barbadensis) is a species of succulent plant in the genus Aloe. An evergreen plant, it originates from the Arabian Peninsula but grows wild in tropical climates around the world and is cultivated for agricultural and medicinal uses. The species is also used for decorative purposes and grows successfully indoors as a potted plant. 
It is found in many consumer products, including beverages, skin lotions, cosmetics, or ointments for minor burns and sunburn.
It is used in traditional Indian medicine for constipation, skin conditions, worm infestation, infections, and as a natural remedy for colic. In Chinese medicine, it is often recommended in the treatment of fungal diseases, and in the Western world, its use has become widespread in the cosmetic, pharmaceutical and food industries.
In fact, the manufacture of aloe vera extracts is one of the largest botanical industries in the world.
Aloe gel is used to treat osteoarthritis, intestinal diseases, fever, itching, and inflammation.
It is also used as a natural remedy for asthma, stomach ulcers, diabetes, and to ease the side effects of radiation treatment. Aloe latex is used to naturally treat depression, constipation, asthma, and diabetes.
Aloe vera contains antioxidant vitamins A, C, and E, plus vitamin B12, folate, and choline.
• Contains eight enzymes, including alliiase, alkaline phosphatase, amylase, bradykinase, carboxypeptidase, catalase, cellulase, lipase, and peroxidase.
• Minerals such as calcium, copper, selenium, chromium, manganese, magnesium, potassium, sodium, and zinc are present in aloe vera.
• Provides 12 anthraquinones, or compounds known as laxatives. These include aloin and emodin, which act as pain relievers, antibacterials, and antivirals.
• Four fatty acids are present, including cholesterol, campesterol, beta-sisoesterol, and lupeol, all with anti-inflammatory results.
• Hormones called auxins and gibberellins are present; they help heal wounds and have anti-inflammatory properties.
• Aloe vera provides sugars, such as monosaccharides (glucose and fructose) and polysaccharides.
Drew Barymore, the Never Been Kissed actress, has said that she cured skin discoloration with flesh from an aloe vera plant. "Actually, he was sucking the red out of my face," he wrote. «In two days [sic] disappeared. I even tried whitening creams, and noticed it flushing the red spot off my face until I came up with this natural remedy. The flesh of the live Aloe Vera plant worked to extract the red.