Once a year is good enough. However, if your house located near trees and is prone to dust and mold, consider power washing twice a year, or probably more often. It also depends on the material of your house. Concrete can withstand more frequent power washing than wood.
I would suggest you do it once a day in three days.
How often you should wash your hair in a cold climate depends on your hair's natural greasiness and how comfortable you are with it. You should wash it whenever you feel like it is too greasy.
Huh? if you mean wash, you should never wash them otherwise they shrink and rack your balls.
It is recommended to wash a towel used for bathing after every use...
Children should use a warm wash cloth to wash their faces, privates, and visible dirt daily. Then, twice a week, they should take a bath and wash their hair. In the bath, they should also wash their feet.
Women should wash their hair at least every two days. But I wash my hair everyday.
about once a week
twice a day without fail
You should wash your hair every other day or less if the hair is thinning.
It's recommended to bleach and power wash prior to painting the exterior of a home. A primer/sealer should be used on any bare wood or masonry and on any chalky surface however if the surface is clean and sound, a good quality paint should adhere without a problem.
Every other day should be enough
You should wash all linen at least once a week. This holds true for silk bedspreads as well.