Since 2700 years BCE, using salts in your bath is a simple healing luxury designed to replicate natural mineral baths or hot springs. Salts are water soluble and can be colored and scented with skin safe fragrance or essential oils. Salts with a finer or smaller grain size make great scrubs and can be used as an exfoliant ingredient in soaps. Epsom salts are high in magnesium and make a great sore muscle soak. Dendritic Salts are very fine and provide a super aromatic bath. We recommend using up to 3% fragrance oil or 1% essential oil in your salt products.