The inner pulp of the aloe plant contains gel and that's the one which brings about the medicinal value of aloe vera. Aloe vera contains several components such as amino acids, minerals, enzymes, salicylic acid, organic components like glucose and proteins, inorganic components like chloride and potassium among other components.
The gel is rich in water and nutrients. Polysaccharides are responsible for bringing about the healing effect. Besides it contains 20 amino acids and high content and that's what makes the skin healthier.
Generally, it is the chemical combination of compounds in aloe vera that work together to bring about change by stimulating cell regeneration. The good thing with aloe vera is that it doesn't have side effects and if there is, then its mild.