This NEST New York Charcoal Woods Reed Diffuser takes you deep into the wilderness where charred birchwood and smoky labdanum linger in the air along with hints of black truffle, cedarwood, and patchouli. Expertly crafted with the highest quality fragrance oils, it releases an equisite woody scent slowly and evenly into the air for approximately 90 days, delivering continuous fragrance, uninterrupted. The intensity and reach of the fragrance can be customized based on the number of reeds used.