Terephthalylidene dicamphor sulfonic acid

Approval

In Europe, TDSA is an approved UV filter, which means that this ingredient can be added to sunscreen products that are designed to protect the skin from the sun. In Europe, sunscreen products are considered cosmetic products. In the United States, sunscreen products are OTC drugs. Several OTC sunscreen drug products containing TDSA, which has been approved by the FDA via the NDA process. When used in OTC sunscreen drug products in the United States, this ingredient must be called Ecamsule. For cosmetics and personal care products in the United States, TDSA may be used as an ultraviolet light absorber.

Uses

terephthalylidene dicamphor sulfonic acid is an FDA-approved sunscreen chemical with uV-filtering and absorbing capacities. It has an approved usage level of up to 10 percent in the european union.