Kabello hair building fibers are meant to be applied topically ruling out any chance of side effects, irritations or infections. Kabello hair fibers are developed using a special technology which ensures that a fiber cling to individual hair stands giving them a thicker and fuller appearance within second of applications. Kabello Hair Building Fibers are nearly identical to human hair, blending naturally and undetectable. How to Use: Make sure your hair is washed and thoroughly dried. Hold the jar at a slight angle and lightly pour and small amount of hair fibers evenly on the thinning area. Blend fibers gently using your fingers tips and a gentle comb