Unfortunately, there are no truly environmentally friendly alternatives for spray heads that meet the requirements for proper packaging in terms of product safety. We would have gladly chosen a glass bottle with a screw-on spray head, to enable the separation of glass and plastic/aluminum or even offered to accept returned bottles for refilling. Unfortunately, however, a tight seal is not guaranteed with screw caps. The technical experts we asked about the refill concept explicitly advised against it. Sending the bottles back causes additional CO2 emission, as the glass must be cleaned very carefully, with the use of chemicals and a lot of water, until it can be reused in accordance with cosmetic requirements. The idea was worth exploring, but unnecessary resources are wasted for a refill variant; it is therefore not a contribution to the climate or the environment, and not an option for MAX-SUE.