Sevich Hair Fiber adds volume to your hair making it fuller and thicker. These are premium quality hair fibres are made from 100% natural keratin. They work by forming a hair like structure on your scalp which blends in with natural hair. They contain no chemicals and can be used on all skin types.Sevich Hair Fibres are great for adding volume to thinning hair and bald spots in men and women.Sevich Spray Applicator is a tool that attaches to bottles of Sevich hair fibres to allow for a more precise application. It allows you to easily target and spray hair fibres into specific areas.