BEHENTRIMONIUM CHLORIDE. Try to pronounce that one! It's one of the top ingredients in my favorite shampoo, which has the words "100% Vegan" stamped on the label. It also says it's "free of sulfates," "gluten free," and "paraben free." But in tiny, nearly unreadable mouse print is a list of ingredients that scare me. The Environmental Working Group rates my shampoo an 8 out of 10 (the higher the number the worse it is). But the good news about shampoo is that you wash it out—