Product information:Body Wave Tape In Remy Human Hair Extensions Material:100% remy human hair, can be straightened, curled, dyed to darker color and restyled as your own hair. Heating temperature should not exceed 180℃. Hair Color:#1B(Natural Black) Length: 14inch 16inch 18inch 20inch 22inch 24inch Hair Weight: 20Pieces, 50G/Pack. Quality:No Tangle No Shedding No Smell &Full End Life Time:Last More Than 3 Months ,if you keep and care it carefully Tape In Hair:Full Head Thick Hair if you have thin hair, we recommend that you can get 3-5 packs if you have thick hair, we recommend that you can get 2-3 packs About Product: 1.Make sure your hair is washed and unconditioned before applying. 2.Be sure not to put the tape ins too close to your hair root since it may cause uncomfortable to your scalp. 3.Only dye light colors to dark colors. Take one piece to try before you dye all the hair. 4.We recommend to deep condition your tape in hair extensions once per week since there is not nutrition supplied like our natural hair.Hair extensions need to absorb nutrition from hair conditioner. 5.If you find it hard to choose a color, feel free to contact our customer service for help.