Our Brazilian Body Wave Tape In extensions are 100% Virgin Brazilian Hair that is pre taped with  medical grade glue that is safe for hair and must be installed correctly by a prfessional hair stylist. Tape-in installs look completely natural and are very versatile. 1 set is 20 individual pieces which equals 50 grams. you will need about 150 to 175 grams for a complete install. Please consult with your hair stylist before purchasing.