1-I tip hair extensions human hair is made of high quality glue that can strongly sticks the bonded ends and last long. not easy to fall off. The I tip human hair extensions can be applied with micro beads, which is harmless to your hair and scalp.easy to wear and remove,can be reused many times. 2-Senmy I tip Hair Extensions are made of high quality human hair, No tangle, No shedding, No split ends which can blend well with your own hair. 3-I tip Hair Extensions Real Human Hair Specifications:14-16inch is 45g, 18-22inch is 50g. we recommend 1pack for adding highlight, 2-3packs for adding volume, 3-5packs to adding volume and length. 4-All the itip human hair extensions can be cut,straightened,curled and dyed to darker color.but please control the temperature under 180°C. Note: Frequently restyle or dye will reduce the hair extensions lifespan. 5-All the I tip hair extensions human hair are taken by ourselves.The exact color may slightly different from picture showed due to lighting,monitors and setting. hope you can understand. If you have any questions or suggestions, please feel free to contact us. I Tip Hair Extensions Human Hair