APOTHEKE Charcoal Reed Diffuser in Black. APOTHEKE Charcoal Reed Diffuser in Black. A reed diffuser made with essential and perfume-grade fragrance oils featuring the rich, addictive scent of Charcoal in a black glass vessel with a smooth matte finish for a modern and timeless look.. Cedarwood and sandalwood are combined with smoky amber and oud to build a broody, full-bodied fragrance. Fragrance Family: Exotic-Wood. Premium, alcohol-free formula with a proprietary blend of essential and perfume-grade fragrance oils. Cruelty-free. 6.7 fl. oz. / 198 mL. Remove plug from bottle and untie the reed sticks.. As the oil is absorbed by the reeds, fragrance will begin to diffuse.. Flip the reeds weekly or as desired to intensify fragrance diffusion.. APOR-WA4. AP04-CH.