Color and Preservative free. Dermatologist tested Kneipp Classic Thermal Spring Bath Salts gently exfoliate, tone, and increase elasticity. Brine from thermal-spring saltwater far below the earth surface is processed into crystals and then blended with pure plant essential oils. Activated by hot water, these enriched salt crystals help build resistance to daily aggressions. Available in seven different scents. Net Weight: 2.1 oz. / 60 g (1 Application)1. Thermal Spring Bath Salt Lavender – The aroma-intensive, essential lavender oil stimulates and balances mind and body.