This product uses the purest Epsom Salt grade and 100% Pure Essential Oil of premium distilled quality. The Epsom Salts combined with the Lavender Oil provide a calming and relaxing experience. The Lavender Oil is encapsulated by the Tapioca starch in solid powder form until it is ready for use. Once the product is immersed in water, the starch releases the oil which is dispersed into the warm water. The starch provides a softer feel to the water enhancing your bath experience. No artificial colours or fragrances.