You can start right now! Just section off your hair, you can use the rubber bands to start your sections, and start twisting each section. After you have twisted a section, wax, and you can put a rubber band on the tip, but it is optional, and you probably don’t need to. If you can wait until your dreads lock up before you wash them it would be great but if you need to wash, be very careful, because the dreads are very delicate until they lock up. You might want wax and put rubber bands on the tips before you wash to help hold the hair together.