Should I dye my hair with permanent hair dye or semi-permanent hair dye?

Use semi-permanent, You need to like the hair colour before using permanent. If you dye it semi-permanent if you don't like the colour it goes then you can wash it out in a few washes, If you die it permanent it ruins your hair and you'd be stuck with it. If you find by using semi permanent you like the colour go and find the same colour but in permanent and die it that colour:)

iv used both multipul times. Semi- permanent dye will fade over time but sometimes (this happend to me and a couple of my friends too) ur roots will come out as well. At least with permanent the colour wont become dull, its just a personal prefrence but i think permananet is better because at least u can just touch up ur roots whenever they get so bad. Semi- permanent is suposed to be less harsher on ur hair, though it wasnt for me but hey that might just be my weird hair. Whatever u decide wont realy matter because there baisicly the same thing. Have fun lightening ur hair, i am aswell actualy (im using permanent) Btw u might want to get a cheap hair mask from boots or superdrug or whatvere as hair does get seriously damaged, especialy when lightening because of the bleach and peroxied, after all u dont want hair loss <-- dont freak out though iv dyed my hair about 7 times last year and my hairs still on my head.

Hope i helped, happy hair dying :)