Chemicals and Personal Care Products.
I’m not sure if this is scare tactics or not as I’m not qualified to make that judgement but common sense tells me that using skin and body care products without doing any research into what goes in all those soaps, moisturisers, deodorants etc. is as irresponsible as not knowing what your eating or feeding your family. You can’t just trust manufacturers and food producers to have your best interest in mind over their bank accounts.
A good book to check out for some great science based advice is “The Healthy Home” by Dr. Myron Wentz and Dave Wentz. Some good common sense changes you can make to your home etc. to decrease the toxic load on your body.