Hey . i am 21years old . i complained about my chin i have so little hair in my face and i want have great chin. and all family don't complained .

Facial hair: If you otherwise have normal hair and a normally developed penis then it might be just how you are and you will save money on shaving supplies. If there really is too little hair or not normal otherwise , there are blood tests that can be used to check if there are any problems causing this. Some are genetic ( run in families or are inherited or born with) and some due to problem with hormones.