100% Magnesium Sulfate Directions - For general soaking to ease minor aches and pains add 2 cups of Epsom salt to your warm (not hot) bathtub. Soak for up to 20 minutes. For minor sprains - add 1 cup of Epsom salt to about a gallon of warm water. Soak for 30 to 45 minutes. For exfoliating - after soaking your desired body part, massage a handful of Epsom salt into your skin. Storage instructions - Do not store in direct sunlight. Keep sealed in a cool, dry place. If caking occurs, gently tab or crush between fingers. Package sold by weight not by volume. Some settling may occur. Warning - Where prompt relief is not obtained or where there is evidence of irritation or infection, discontinue use and consult a doctor. Do not use if pregnant or diabetic, unless advised by a doctor. CAUTION: KEEP OUT OF REACH OF CHILDREN. Do not use on open wounds. Use only as directed. If irritation occurs, stop use immediately. Contact a physician if irritation persists. Do not ingest. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) immediately