Your breathing zone is the area around and in front of your face. Anything in this zone is what both you and your client can breathe in. This is especially relevant for the dust created during nail services. Dust is a known hazard for many nail services and the finer the dust the more likely it is to be in your breathing zone and can irritate your respiratory tract and reach your lungs. This is why local dust extraction for the nail services that create dust is recommended.