Cosmetics
Try avoid products that contain Bisphenol A/BPA, (or phthalates, dioxins, perchlorate and PFCs). These chemicals contain xenoestrogens which mimic oestrogen in the body and disrupt normal body/hormone functions. They contribute to hormone related issues/cancers (eg breast/prostate/ovarian), infertility/PCOS etc. My general rule would be go for the most natural products you can find as less likely to do any harm !