I recently went shopping with a friend who wanted to buy some high quality personal care products as gifts for her pregnant sister. At the counter of one retailer that specialized in hand-made soaps, she asked me if all of the brightly colored, strongly scented soaps were safe for pregnant women. Before I could respond, “Of course!” the sales clerk proudly declared, “our products are 100% natural and free of chemical additives.” But while reading labels, I noticed some synthetic surfactants in t...