Of the 13,000+ chemicals used in cosmetics, only 10% have been safety tested. On top of that, manufacturers are not required to release the testing data to the FDA. Considering how unregulated the cosmetic industry is, it’s no surprise that a recent study linked a chemical commonly used in cosmetics and other products to an increased risk in osteoporosis.

In the study, published in the Journal of Clinical Endocrinology & Metabolism, researchers looked at data from 1,848 women between 2005 and 2010. They found that women who had higher levels of triclosan in their urine were more likely to develop osteoporosis later on in life.

Triclosan is often used as a bactericide in cosmetics, as well as other personal care products such as toothpaste, deodorant and antibacterial soap. While previous studies have linked the chemical to heart disease, heart failure, disrupted muscle function, allergies, weight gain, inflammation and disrupted hormone function, this study is the first to find a direct connection between triclosan and an increased risk of osteoporosis.

Researchers believe the connection involves the thyroid. Triclosan interferes with thyroid function, and previous studies have shown that a thyroid imbalance can cause bone loss and increase a person’s risk of fracture.

Earlier this year, the U.S. Food and Drug Administration issued a final rule banning triclosan from over-the-counter hand sanitizers in the United States. However, the dangerous chemical is lurking in many products, from face wash and dish soap to makeup, antiseptic creams and even baby toys.

Personal care products are allowed to reach store shelves without any prior approval by any agency. Only after a product has demonstrated harm, has been misbranded or adulterated, may the FDA take action. In other words, only after someone has been harmed does the FDA step in. Even products claiming to be nontoxic could be full of dangerous chemicals.

So what’s the best way to ensure your products are safe? Become an informed consumer. If you don’t know where to start and you need a little help, head over to the Environmental Working Group. They keep an extensive database to help you find personal care products that are safe for use.