Simply place in a Tarts® wax melts warmer (never add water) and light an unscented tea light below, or use one of our electric warmers. As the wax melts, the fragrance is released. Mix and match scents to create your own personal aroma blends. Hours of Scent: 8 hours at least. USA/Retired scents may not be 100% perfect this can be due to the age of the product and may also include slight crumbling – we reflect this in the prices we offer and in extreme cases will reduce prices of items we feel are not in a satisfactory state. We try our best to offer our customers the very best of standards and store all our wax products temperature and light controlled for the very best of standards.