It's Halloween! Despite being labeled nontoxic, many Halloween costumes have been shown to have high levels of lead and chemicals like phthalates in independent testing. Since there's no way to tell if a costume is free of these chemicals, the next best thing is to avoid certain types of materials. Avoid anything with soft plastics or vinyl, which likely will contain phthalates (endocrine disrupters). Costume jewelry made from plastic and fake gemstones have a good chance of being loaded with lead; don't let young kids wear these jewels since they may put the jewelry in their mouth. Don't forget: You can always make your own costumes using old clothes and nontoxic paints to be extra sure.