Ditch the Boring. Add some joy to your ride! All handmade in our NC studio! Our Christmas Tree air fresheners / diffusers are an eco-friendly and more health conscious alternative to the traditional boring plastic ones! Our fragrance oils are clean and free of phthalates, parabens, and any ingredients on the California Prop 65 list. One of our owners invented these adorable, reusable plant diffusers as an alternative to traditional car air fresheners that contain chemicals that can be harmful to breathe in. She often got headaches with other air freshener options, plus they were all the same boring plastic design. So, the plant car vent diffusers were born! How do they work? * Apply some drops of fragrance or essential oil to the cork pot - add a little or a lot! * Allow it to soak it in and then turn on your heat/AC - and, voila! * The scent diffuses throughout your car! These are reusable, so you can switch it up and diffuse any essential or fragrance oil of your choice!