I suppose, in my case, its a perhaps misguided effort to provide the wonderful healing minerals into a soap bar...that Dead Sea salt and Himalayan salt have..but it turns out using them in a soap is problematic so.....better kept to bath salts, tho I have made soleseife bars with Dead Sea salt..not very much in the water compared to what is usually used and they turned out ok. Nice, in fact... ALSO...I use a washcloth with soap always, so the scratch factor does not exist for me.....in the future I will be more mindful. Best practices in general.