Phthalates: They are also known as phthalate esters. They are esters of phthalic anhydride, a family of industrial chemicals used to soften polyvinyl chloride (PVC) plastic and used in cosmetics as softeners or solvents and other consumer products .They can be found in products such as nail polish, moisturizers, shampoos, hair sprays, toys, detergents, and other variety of products. 

Dangers of Phthalates: They are known to be endocrine disruptors that is linked to breast cancer and reproductive birth defects in males and females. They can damage the liver, kidneys, and lungs. They are also known to have some possible effects on hormones. They are unfortunately, included in many "fragrances" so it is hard to detect in products.