The Yusezen EMS Eye Mask (Model: YZ-EM01 ) has been tested under the European Union's RoHS 2.0 Directive (2011/65/EU, 2015/863, 2017/2102) and holds the RoHS Certificate of Conformity , proving that it is free of harmful substances. This certificate confirms that the product does not contain hazardous chemicals such as lead, mercury, and cadmium, which can harm human health and the environment. Yusezen combines luxury and a scientific approach with its premium eye mask , rejuvenating care technology , and anti-aging solutions , while also adhering to the principles of environmentally friendly production and sustainability . This certificate is official proof that Yusezen is not only a brand focused on aesthetics and health but also respects ecological values.