· Real Human Hair:Full Shine i tip hair extensions are made of real human hair,heat resistant and durable,with a smooth texture that blends naturally with your original hair· Italian Keratin:Full Shine i tip hair extensions are made from Italian keratin which is a protein component of natural hair;it is easy to apply and remove,and will not cause irritation to your natural hair and scalp when used correctly· Specifications:16-22 inch i tip hair extensions,0.8 g/s total 50 strands 40 gram;the i tip size is 1 cm long×0.2 cm diameter,about 0.05 cm deviation;we recommend using beads with a diameter of 0.4-0.5 cm· Cold Fusion:I tip hair extensions requires no heat for application and is also no glue used,you need to use i tip sticks with micro beads or loops to blend naturally with your original hair· Installation Tips:To ensure maximum comfort,we recommend installing the hair extensions 1.5-2 inches away from your scalp;no matter which installation method you choose,our extensions will blend naturally with your original hair· Warm Tips:After wearing for a period of time,due to shampooing,combing,sleeping and other reasons,the beads may become loose,so we recommend re-flattening the beads every 2 weeks· Flexibility:Enjoy the flexibility to add volume and length exactly where you desire,creating a personalized and custom look;to express your style,incorporating a different color as highlights for a bold and distinctive look