These Car Perfumes Come In Small Glass Bottles With Wooden Lids, Designed To Diffuse The Fragrance. Car Scents Can Mask Unpleasant Odors And Provide A Fresh Or Luxurious Aroma. They Often Utilize A Diffusing Lid That Expands With Heat To Release The Fragrance. To Use, Remove The Lid, Take Out The Stopper, Replace The Lid, And Briefly Invert The Bottle Before Hanging It In The Car. It'S Recommended To Clean The Car Regularly To Maximize The Perfume'S Effectiveness And Avoid Competing Odors.