The researcher’s team in New York from Mount Sinai Medical Center proves that there are some chemicals in shampoo which have calories, these shampoo calories help gaining weight, a chemical namely phthalates increases the body weight. Phthalate is used in many beauty products. Although 70% products include phthalates, and the research shows it damages natural weight control system.

According to research, "The heaviest girls have the highest levels of phthalates in their urine. Shampoowhich has chemicals like phthalates includes lot ofshampoo calories. These chemicals are also used in a wide range of consumer products such as incosmetics, perfumes, lotions, shampoos for fragrance etc. but in humans they play a role in gaining weight by disrupting hormones that regulate growth and development, the researchers found. Endocrine disruptors imitate the hormones effects and affect the glands’ work that produces them.