Being eco-friendly includes telling consumers everything that is in a product. Every ingredient, every chemical, every constituent.

That’s why I’m impressed with the firm, MBDC (McDonough Braungart Design Chemistry), which certifies products according to “cradle to cradle” criteria. Among other information they require, a company must submit

All material ingredients identified (down to the 100 ppm level)

This information aids MDBC in assigning a rating of gold, silver, etc. to a product. Here’s a list of their certified products.