Incense -Car Fragrance Stones Highlights Generic Brand Car Fragrance Stones Description: Small and exquisite, easy to carry. Absorbing essential oil through the holes, without heating. Ideal for: toilets, cars, office and bedroom, etc. It's a good choice to use it while doing yoga Usage: Soak in clear water for about 2-3 hours for the first time, then pat dry, then add your essential oil. Dip it in when switching to other types of essential oils. Specification: Material: Powder Stone Star Size: Approx. 4x3.2x0.5cm (LxWxH), Quantity: 2Pcs Heart size: 3.5x0.6cm (LxH), Quantity: 4Pcs Package includes: 6 pcs scent stones complex essential oil, perfume oil or perfume. If you add pure essential oil or complex essential oil, your body will benefit from the essential oil. Meanwhile, it won't work if you just add the fragrance oil or perfume, they smell like they really are.