Their group name Sekken'ya can be literally translated to "Soap shop"; "soap" (石鹸 sekken), ya (屋, suffix for "shop/seller/dealer"). Contrary to it, they do not sell soap.
There is an English fan-site for Sekkenya, Soap Shop, run by hirasawayui. It is focused on bringing English speaking Sekkenya fans together in a community, hosts lyrics for their original songs, and provides downloads for obscure Sekkenya files.
Kotensoft