Hair bleach is used to dye dark hair in blonde. This is normal and expected. Lightening bleach powder, splat oxide, shampoo, and conditioner.
Use bleach on your eyebrows and other facial hair, just be careful not to get any near your eyes.
And shampoo your hair with fresh water. Wrap your head in plastic, or put on a shower cap. My hair is thick and dark, and it was not cooperating with the small amount of mixture provided in the kit. Use a towel to wipe off a little bleach.