Saliva levels are pretty much correct by 48 hours 80% of people are below detection and by 72 hours the other 20% are too.
As for
Passing a hair drug test most products are just clarifiers and old school mudds. One factor not mentioned is prep time too many people think you can smoke all the time and then take a test in a few days . You need to detox and wash with a clarifier like aloe rid from sally it cost 6 bucks and is just as good as toxin wash . when you are completly clean plus 10 day then you can have the people at
Pass It instruct you as EVERY persons use and time is differant so not too many hair treatment are the same.