All used chemicals should be in compliance with the REACH regulations. Therefore certain chemicals must not be used and/or avoided.
Details of chemicals and substances used in a product, must be made available through appropriate tests, by the manufacturer. These tests must be provided within 30 days upon request of Wehkamp and communicated clear and correct.
Further information is available at:
https://ec.europa.eu/environment/chemicals/reach/reach_en.htm