As the title suggests, I am looking for suppliers of (dead) sea salt products in the UK.

My understanding is that you have to be quite liberal in using it when you put it in the bath.

This is one obvious example from Boots: https://www.boots.com/en/Dead-Sea-Genuine-Bath-Salts-1000g_7635/

Do any UK-based people have specific suggestions that have worked for them?

Thanks.