Ingredients: Magnesium sulfate.

Product Information: Epsom salt, also known as magnesium sulfate, has a variety of uses, from gardening to bath salts. Magnesium is critical for seeds during germination and helps plants strengthen their cells walls to more effectively receive essential nutrients. The sulfate helps to develop chlorophyll, which assists plants in converting sunlight into food. For a spa-like treatment, use Epsom salt in your tubs.