Here’s a toothpaste that’ll really make you smile: Tom’s of Maine Natural Long-Lasting Wicked Fresh! ($4, tomsofmaine.com). It does what the conventional brands do without the animal experiments or toxic chemicals. Plus, Tom’s of Maine gives 10 percent of its profits to charitable organizations supporting the environment and human needs. Clean water and accessible dental care are tops on the list, so you can brush with a conscience as clean as your teeth.