Learn about a few of the top ingredients and contaminants to avoid, based on the science linking each to adverse health impacts, and the types of products they're found in. To learn more about how chemicals impact your health and where they come from, check out the Your Body, Your Health section.

For each of the chemicals included in this section, a growing body of hazard-based evidence suggests connections to long-term health concerns like cancer and reproductive problems.

These are just a very few examples of the 10,500 ingredients used in personal care products. To learn more about other chemicals, visit EWG's Skin Deep database of cosmetic products and ingredients.