A microfluidic delivery device comprising: a housing ; a cartridge configured to be releasably connectable with the housing , the cartridge comprising: a reservoir for containing a fluid composition , the reservoir comprising a top surface , a bottom surface opposing the top surface , and a sidewall that joins the top and bottom surfaces; and a microfluidic die in fluid communication with the reservoir , wherein the microfluidic die is configured to dispense substantially all of the fluid composition via a fluid composition outlet in a horizontal direction or downward direction relative to horizontal; a fan creating an air flow; and an air flow channel disposed below the reservoir , wherein the air flow channel extends from the fan to an air outlet , wherein the air flow channel comprises a first region disposed adjacent to the fan , a second region disposed adjacent to the air outlet , and a third region joining the first and second regions, wherein at least the second region is angled upward to the air outlet , relative to horizontal-, characterised in that the air outlet is disposed adjacent to the microfluidic die and/or the fluid composition outlet such that the air flow exits the air outlet and travels in an upward direction before the air flow converges with the fluid composition dispensed from the microfluidic die and upon converging redirects the fluid composition in a generally upward direction, relative to horizontal. a housing ; a cartridge configured to be releasably connectable with the housing , the cartridge comprising: a reservoir for containing a fluid composition , the reservoir comprising a top surface , a bottom surface opposing the top surface , and a sidewall that joins the top and bottom surfaces; and a microfluidic die in fluid communication with the reservoir , wherein the microfluidic die is configured to dispense substantially all of the fluid composition via a fluid composition outlet in a horizontal direction or downward direction relative to horizontal; a reservoir for containing a fluid composition , the reservoir comprising a top surface , a bottom surface opposing the top surface , and a sidewall that joins the top and bottom surfaces; and a microfluidic die in fluid communication with the reservoir , wherein the microfluidic die is configured to dispense substantially all of the fluid composition via a fluid composition outlet in a horizontal direction or downward direction relative to horizontal; a fan creating an air flow; and an air flow channel disposed below the reservoir , wherein the air flow channel extends from the fan to an air outlet , wherein the air flow channel comprises a first region disposed adjacent to the fan , a second region disposed adjacent to the air outlet , and a third region joining the first and second regions, wherein at least the second region is angled upward to the air outlet , relative to horizontal-, characterised in that the air outlet is disposed adjacent to the microfluidic die and/or the fluid composition outlet such that the air flow exits the air outlet and travels in an upward direction before the air flow converges with the fluid composition dispensed from the microfluidic die and upon converging redirects the fluid composition in a generally upward direction, relative to horizontal. <EOS>