Samson Hair Fibers DO NOT contain Keratin, Why Not?. Keratin in hair fibers are derived from ANIMALS ONLY , it is not sanitized, and may carry health hazards. Especially if it is made in China, as the Chinese do not have good supervision over beauty products. Keratin has no value whatsoever as hair fibers. Keratin has great value in hair products in liquid form. We are the keratin experts, we know it well. How Does It Work? The Hair fibers are precision cut so light and small and then go through an electro-static energizing process. Once they come in contact they get attracted to hair shafts therefore thin hair seem many times fuller and darker due to thousands of tiny fibers clinging to the hair and it appears thicker. Genius idea, yet so simple and safe.