The European Chemicals Agency (ECHA) identifies that “this substance may cause long lasting harmful effects to aquatic life.”
Studies have also found octocrylene to cause endocrine disruption. Researchers Kunz PY, and Fent K have found that the substance partially imitates androgen.
A group of Danish researchers can also confirm from their study “Chemical UV filters can affect human sperm function in a progesterone-like manner“, that octocrylene has endocrine (hormone) disrupting properties and as apparent from their report-title, negatively affects sperm function.
Octocrylene is allowed to be used as a UV filter in cosmetic products in the EU but the “Maximum concentration in ready for use preparation” is 10%. Health Canada and the US Food and Drug Administration (FDA) has similar restrictions, maximum concentration allowed is between 10-12 %.