Do you know the PDF of your shampoo? A ‘PDF’ refers to a “partially diminished fraction of an ecosystem,” and if your shampoo contains palm oil cultivated on clearcut jungle in Borneo, say, that value will be high.
How about your shampoo’s DALY? This measure comes from public health: “disability adjusted life years,” the amount of one’s life that will be lost to a disabling disease because of, say, a liftetime’s cumulative exposure to a given industrial chemical. So if your favorite shampoo contains two common ingredients, the carcinogen 1,4 dioxane, or BHA, an endocrine disrupter, its DALY will be higher.»