To use our car fragrances, you will need an aromatised polymer and our polymer holder. You can buy our polymer in a refill pack or together with the holder. The assembly is very easy. First, attach the plastic clip to the lower part of the wooden element of the holder, place the white scented polymer into the wooden element and press it down. Then put the upper part of the wooden element to fix the holder. Then attach the car fragrance to the ventilation grille in your car using the clip. When the scent wears off, simply replace the used polymer with a new one.