Mike Macujo Created this online Hair Wash Calculator to help our customers get an idea of how many washes it will take to get your hair clean so you can pass your hair follicle drug test. If you used multiple drugs, run the program for each drug separately and whichever drug requires the most washes, will be enough to remove all the drugs from your hair. Keep in mind that Mikes macujo method will permanently remove all traces of drugs from your hair, until you use drugs again... Just answer the basic questions below and to see how many washes you will need to pass your hair drug test.