But these materials are not particularly kind to the environment, so the long - term objective is to replace petroleum based products with materials derived from renewable resources. (sciencedaily.com)
I also use a lot of petroleum based creams with no problem, but I only use natural fiber diapers. (nourishinglittlesouls.com)
This mattress is more eco-friendly than a conventional mattress manufactured from petroleum based oils. (best-mattress-reviews.com)