Bleaching hair?

i'm an african american female [with black hair] and i dyed my bangs blonde last thursday but only the roots changed color. i bought cream peroxide (40 volume) and powder bleach yesterday cuz i wanna dye/bleach my bangs blonde. i know bleaching damages hair, but i wanted some tips [on how to go about bleaching my hair] so that it doesn't fall out.

Bleaching hair?
GIRL i can help! i had jet black hair also an african american. to dye blonde you need to bleach or get a booster if you get a blonde kit it will have the booster in it already. as soon as it is the color you want take it out wash hair with a deep condition. an hot oil treatment or an oil treatment every two weeks is a must you cant let your hair get dry i sugguest you grease your scaple or spray with oil sheen every other day or so. bleach hair must be taken care of make sure you do a deep condition when you wash it good luck
Reply:don't leave it in too long and deep condition your hair the day before.
Reply:The heat from your scalp sped up the bleaching process, so you may want to try applying the mixture 1/2 inch away from the roots, wait until your hair is almost to the color you want, then apply the mixture to the roots for the last 5-10 minutes of processing.
Reply:40 is toooooo high try 20- 30