All in all, according to the petition, three batches of one brand of dry shampoo product contained a spray of more than 100 parts per million of benzene, and some samples tested by Valisure showed more than 10 times the FDA's drug limits. The petition also notes that Valisure has detected benzene in other commonly used products, including certain hand sanitizers and sunscreens.

CNN reached out to the brands listed in the petition and reached out to the FDA for comment, but did not immediately hear back from all of them.

In a statement, ChurchDwight said the maker of Baptiste hair products said: "Consumer safety is of Paramount importance. When it was reported that propellant was the source of benzene in a competitor's recalled products, we contacted propellant suppliers and confirmed with those suppliers that the propellant used in Baptiste's products did not contain benzene. We will evaluate the report by centering on recent claims." "

Not Your Mother's, the Haircare brand listed in the petition, told CNN in a statement, "The safety of our consumers is our top priority. We are concerned about a recently published report related to the dry shampoo category that calls into question the amount of benzene detected in propellants used in aerosol products manufactured in or before fall 2021. This report is inconsistent with the data provided by our vendors and the rigorous testing conducted to ensure the safety and integrity of our products. These tests revealed no traceable benzene levels. We are committed to continuous evaluation to ensure maximum safety and quality across all of our products."

ECHEMI is a chemical supply chain service company headquartered in Hong Kong, providing chemical raw materials supply, research and analysis marketing, distribution, logistics, e-commerce, and after-sales services.

At present, the product ranges mainly cover paint coating, food nutrition, fine chemical, pharmaceutical, and rubber plastic. In the next decade, ECHEMI will focus on supply chain services, resource optimization, and management efficiency, providing better products and services.

"These and other issues identified by Valisure, including the detection of benzene in body spray, hand sanitizer, and sunscreen products, strongly underscore the importance of independent testing and its need to be better integrated into an increasingly complex and fragile global supply chain."

Last year, some deodorant and sunscreen products were recalled because benzene was detected.

Benzene is formed by natural and artificial processes. According to the US Centers for Disease Control and Prevention, "Natural sources of benzene include volcanoes and forest fires. Benzene is also a natural component of crude oil, gasoline, and cigarette smoke.".

"The primary way people are exposed to benzene is by breathing air that contains benzene," according to the American Cancer Society.

ECHEMI --- The name originated from the abbreviation of “E-commerce of chemical”.