Unfortunately not THK Hair Building Fibres are based upon the principle that homopolar anion's static adsorption to the thinning hair and scalp and physically make the hair look thicker and cover the thinning area. THK Hair Building Fibers are suitable for any type of alopecia areata, tonsure, hair thinning and very fine hair. As you can see from our photographs, we can help 90% of people, but it won’t be effective on a completely bald head.