Each car diffuser comes with a 0.5 ml refill dropper bottle so you can refill your diffuser when your scent becomes low. Choose from any of our signature scents to bring the magic of scent with you whenever and where ever you travel. Each diffuser refill bottle comes with enough fragrance to refill your diffuser 2-3 time. Leave your color preference and scent choice selection in the comments section and your scent will be sent to you in your chosen color and favorite to coordinate with your car mood. Get one for yourself or for your friends and family. These diffusers make a wonderful scented gift. Scent choices: Lilac Lavender Dragons blood Amber & driftwood Gardenia Caribbean Teakwood Cucumber Melon Sweet Strawberry Frankincense & Myrrh Plumeria Toasted Pumpkin Leather Pineapple Sage Brandied Pear, Fuck Monday( coffee) ,