These (foot) BATH SALTS are made by using four different types of salts; EPSOM SALT, HIMALAYAN PINK SALT, DEAD SEA SALT and SEA SALT. Every sort of them is a combination of two to four salts, which are told in the descriptions here and the also in the labels. The colours are MICA colourings and 100% safe, the scents are Essential Oils or Fragrance Oils. Add about 1-2 tablespoons to about 4-5 litres of warm water, let it melt and enjoy!