Not sure what products are available for use in the laundry room on the ships, but we always take some laundry detergent sheets that you can buy on Amazon - specifically the unscented/free & clear kind (because I’m allergic to many things and cannot have scents on my clothing/soap/etc - plus the sheets travel SO much better than other options). I can also say that we used the laundry service on our last cruise on the Regal and I didn’t have any issues with scents from that either. Hope that helps!