Education Required to Become a Barber. High school diplomas or GEDs are often the bare minimum for Barbers to have. Extra training through a Barber school or cosmetology school is recommended. Barbering programs normally last for a 9-month period, sometimes providing an associate's degree to the student. These programs start with the basics of hair care and equipment maintenance then go on to complex tasks like hair dyeing.
According to the American Urological Association, the time to pass stones located in ureters -- tubes leading from the kidneys to the bladder -- is an average of 8 days for stones less than 2 mm, 12 days for stones between 2 and 4 mm and 22 days for stones between 4 and 6 mm.
For kidney stones that do not pass on their own, a procedure called lithotripsy is often used. In this procedure, shock waves are used to break up a large stone into smaller pieces that can then pass through the urinary system. 4 mm stone has an 80% chance of passage while a 5 mm stone has a 20% chance. Stones larger than 9 mm-10 mm rarely pass without specific treatment. Some medications have been used to increase the passage rates of kidney stones.