Purchase Date: November 2025 Domestic Sea Crystals 2.2 kg New, Unopened Free Shipping ★ Epsom salt is made from magnesium sulfate (mineral), which makes up 6.1% of the 3.4% of seawater. ★ Epsom salt accounts for 0.2% of the entire sea, and adding about 300cc to a 150-liter bath will result in the same concentration as seawater, allowing Japanese people, who tend to lack magnesium, to absorb it through their skin. ★ Magnesium sulfate cannot be sold as Epsom salt for bathing unless the sanitary environment is of high quality. ★ Made using domestically produced food additives (highest grade) and manufactured in a cosmetic manufacturing standard factory. ★ Magnesium in Epsom salt is an essential mineral that also supports Ca, and Ca is a nutrient necessary for healthy bones and skin.