Himalayan Salt in Bath Salts

[Cellador]

Hello! I hope everyone had a good holiday season! Mine was great but surprisingly busy.

Anyway, I have been making some bath salts lately (for personal use) , and I've noticed that the Himalayan salt I use is leaving a grainy, sandy residue at the bottom of the tub. Not enough to scratch the skin, but enough to be noticed if I sit on it or shift positions. Is this typical of Himalayan salt? Or do you think this is a quality issue (I picked mine up at the grocery store)?

 

[Obsidian]

This is normal for pink salt. The pink comes from small amounts of clay that is in the salt.
Thats why its not recommended for salt bars, the sandy bits can cut.

 

[Anstarx]

I used Himalayan salt to make soleseife bars. When I dissolve it in water for my lye solution it left speckles of red in my lye solution which I have to strain out. So yeah I think it's normal for your salt bars to leave sandy bits.
Since Himalayan salt's advertised for it's high mineral content I think those are the minerals/metals that are insoluble in water.