Soften hard water without chemical additives by using the Vanishing Act calcium remover. Softer water leaves your skin feel silkier as it helps protect your spa components from the damaging effects of hard water. For areas with extreme hard eater, use the Vanishing XL with 3 times the calcium reduction power of the standard Vanishing Act. Reduces calcium hardness in water up to 24 hours depending on current level. Rinse before use.