A device 2, 102 for streaking hair by use of a streaking dye includes a base plate 4, 104 which can be placed against a person's head to serve as a support for a hair-"passee" 24 to be treated. The device 2, 102 further includes a perforation-pattern plate 10, 106 which can be laid on the base plate...http://www.google.es/patents/US5469873?utm_source=gb-gplus-sharePatente US5469873 - Device for producing streaks in hair
