In 1985 the City of Seabrook, with the blessings of Rex and Evelyn Meador, donated to Harris County six acres of land originally given to the City by the Meadors. The donation was given with the stipulation that a county branch library would be built within two years of the donation. The Friends group was founded in 1985 by a small group of interested Seabrook citizens. The initial size of the library was to have been 4,500 square feet.
I would imagine most semi-and demi-permanent dyes are about the same. If you are using a vegetable dye (such as manic panic, special effects, or henna) you may leave on as long as you want, from 30 minutes to overnight.
After mixing your developer with your hair color, you can leave in your hair up to 45 min max. After that period of time, the color will stop working because the oxidation of the two chemicals time has exceeded. So you can leave it on 435235 of times and it won't fry your hair.