Can't recommend which is the safest brand, but since you have blonde hair, you can run into trouble with the black hair dyes. You would need to know what the base color is in order to keep from getting a greenish cast to your hair.
You will also need to know how to do a retouch when your hair grows out which will be about every 4 weeks.
You will also need to know how to do a retouch when your hair grows out which will be about every 4 weeks.
