if you buy the right type and use the right stuff then it shouldn't only last 3 months that's awful! maybe what you are buying is poor quality and cheap. plus what products you are putting in to the hair can have negative effects. a lot of trial and error but you will get there
depends on the look you want and with regards to glues or tape it again depends on what you use and what products you have to remove it. it can be either really hard for yourself or super easy
