Answer. It is no secret that azo compounds are widely used in almost all areas of life. As is mentioned above, they are widely used in feminine care products, dyeing clothes, in leather industries, and textile industries, in making payments and varnishes etc.They are even used in everyday makeup products such as lipstick and bath products like shampoos and conditioners, scented body lotions, and more. The main reason behind their excessive use is easy availability, ease of use, cheap price, and the generalized mode of production.