extension

what to say to someone wants to take their scaf off?Using your own hair for hair extension? salam my sister is 22 years old and she wan't to take her scaf off. When she started to wear it she did it for the people because she does not like wearing it!! NOW she is married but her husband does not mind if she takes it off. She thinks that later maybe when she goes to hajh she change her mind and wear it again. Also she is saying that she does not get a job because of the hijab. I don't know what to tell her i feel alot of pain in side i tell her this is playing games with god and very dangers for your life!!! please can you help me, what can i say to her????I have another issue about my hair. it is thin now can i make it thicker by ussing extension OF MY OWN HAIR. for exaple when my hair grows very long i cut it and use it as hair extension. is that halal in islam???thank you