Manmade chemicals belongs to different groups are used in various consumers products as additives. There is threat of high potential of human exposure to daily use of cosmetics. Present analytical investigation was carried out to check the presence of terephthalic acid esters (phthalates) in twenty four (24) locally available and branded samples of nail enamels and moisturizing lotions from market. Comparison among all chosen cosmetics was done to sort best cosmetics used in Pakistan. Gas chromatography – Mass Spectrometric technique was used to determine the presence of phthalates after proper extraction process. It was confirmed that out of twelve samples of nail enamels, seven samples were contaminated with diethyl phthalate (DEP) and r ema i n i n g contaminated with dibutyl phthalate (DBP). In case of twelve moisturizing lotions, two samples were contaminated with DBP while one was contaminated with DEP. One very important result found in most samples was presence of terephthalic dihydrazide. It is concluded that it may be due to leaching of toxic compound “hydrazine hydrate” from plastic bottles in which they were stored. Comparison of analyzed moisturizing lotions revealed that Nivea and Ponds (moisturizers) are better to use then other analyzed products while none of nail enamels was recommended to use.