Traditional toxicology relies on archaic methods that focus on the short term while ignoring the long term effects of repeated small doses over time.
If you thought your hair products, toothpaste, makeup, mouthwash had poisons in them would you continue using them? The power of advertising, marketing and lobbying make for packaged dreams of beauty and bliss absolutely compelling. We buy the illusions for thickly coated shiny hair, delightful smells, exotic ingredients, flawless skin, and pearly whites.
The skin is the body's largest organ. And it's ravenous. People are wearing patches that pump nicotine and birth control into their bodies. If the skin is an effective conduit for medicines, it's also wide open for toxins.