NairobiTru Colors Semi Permanent Hair Color No.1 Pure Black Unisex Hair Color, 8 Ounce

Can this nairobi colour be used on natural african american hair? does it "take" to this hair type?

Does this color gray hair

Can anyone say whether this nairobi turns your hair red/orange or rust when it is fading? i dislike red hair. thanks for the previous ans i received.