Adult instruction for use: Dissolve salts in a warm bath of 37-39oC. Relax and soak for 20 minutes. For general skin health and well-being, add ½ - 1 cup (approx. 100g-250g) to your bath. To help relax tired and aching muscles use 2-4 cups (approx 500-1kg). Footbath instructions: Dissolve ½-2 cups (approx 100-500g) of salt in a warm 5-litre foot bath of approx. 37oC. Relax and soak your feet for up to 20 minutes, refreshing with additional warm water if needed.