Imperfectness in Definition of Essence of Beauty

The topic of of beauty has been a question without an answer in regarding what is the nature of beauty.Over the years,every group put forward its definition about beauty.What is beauty? Can we give an extract definition to it? From the cause of it we are going to define what beauty is,through the systematic analysis of beauty.While understanding the definition of beauty,we can explain the imperfectness in definition of essence of beauty.