Safe for melting and elimination : No damage with the hair during the application or when removing them. It is easy to remove with keratin extensions remover. Hair Extensions Quantity : 0.5g per strand, 100 strands per pack, totally 50g. Wide usage : can be dyed, curled, straightened, washed and cut.(Please straighten or curl the hair extensions with the temperature under 180). Pre bonded Hair Extension : It reaches a real prolongation of your hair, getting a very natural effect and also an extra strong fixation. Material : 100% Remy human hair, high quality, tangle free, silky and soft.