Its not unhealthy, but i don't recommend
It depends on your hair, if it is used to it or not, but it could make the hair unhealthy if you use it a lot of times (that might sound wrong but hair can get unhealthy) but overall I don't think so.
Trimming your hair often prevents split ends which are unhealthy for you hair.
Make sure its healthy and also if you stay in the sun for a long time it gets brighter. Don't ever color your hair, it makes it very unhealthy.
If you're applying all-over color, you should wait about three months. Otherwise, you can chemically burn your hair and end up with very dry, unhealthy hair.
No, It just makes your hair unhealthy over time.
Some professionals state that chemically straightened hair is unhealthy because all the chemicals that are usually used to do such a procedure on the hair can harm it more than it benefits it.
As long as the person doesn't have a STD, then it is not unhealthy.
Unhealthy... no. It can however pull natural oils from your hair that are desired in nourished and healthy looking hair. If you shampoo daily, you should also condition daily to avoid a dry damaged looking head of hair. So: this is perfectly healthy!
No,that is very unhealthy,for such a young age.
Yes, people with more dry coarse hair tend to do that to keep it mouserized
your hair will start falling out bits by bits and its not healthy. if you have thin hair you don't want to do it everyday. you shouldn't have to straiten your hair more than 3-4 times a week. depending on what hair type you have. long story short your hair will become unhealthy.